{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "747669405",
    "entityType": "User",
    "nonce": "0xae7863908499042632e48c08ce8eb6a512fa3f2de370c723808ab837dce342f9",
    "signature": "0xd086192f237513b81a1835e5ed0da05ff6684dff8be5b8346600ec2e24785d69472ed9cd5d1310f294e41a9385167bdab524029b37dec857a0546d412de0c0231b",
    "signer": "0xbbB98413eB671bb0000F0b18A2A7Cae9631043E1",
    "userId": "98311147"
  }
}