{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd431a2a15b6e6a80cc3879a4d1a8e7ec2818de486163c3fb597a302fe8e8326d",
    "signature": "0x24d194cfe7b3b3653440468d000b3dbdaabf9ae1fab8f7f75e394960d5c321da1c200eba0d0545a179c516c45a7204e31bb6062d06c9300a85e2ec27fffe2e411b",
    "signer": "0x7dd929d0bCEb82111e9A1f35acdaCc8C3e285831",
    "userId": "539952682"
  }
}