-----BEGIN BITCOIN SIGNED MESSAGE-----
I'm the owner DeepOnion-DevTeam bitcointalk.org User ID - 2565496, today is March 20, 2019. Signing a message to stake an address
12Vkg6Ex4GjbC7bZ3tMoVVgR5WQkTSYLEE
-----BEGIN SIGNATURE-----
IAcE0QloLmiqPbuYre8uWrIHKux8sL8YvpPk4n0cN4HMXigLfMtVzTHJUh1XvQd8VynLOfxR8toGUVN 8ly8eOvw=
-----END BITCOIN SIGNED MESSAGE-----
Here is your singed message without the missing address:
The correct format of the message, thanks to HCP.
I'm the owner DeepOnion-DevTeam bitcointalk.org User ID - 2565496, today is March 20, 2019. Signing a message to stake an address
-----BEGIN SIGNATURE-----
12Vkg6Ex4GjbC7bZ3tMoVVgR5WQkTSYLEE
IAcE0QloLmiqPbuYre8uWrIHKux8sL8YvpPk4n0cN4HMXigLfMtVzTHJUh1XvQd8VynLOfxR8toGUVN 8ly8eOvw=
-----END BITCOIN SIGNED MESSAGE-----