{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4819",
    "entityType": "User",
    "nonce": "0x46f2822e2a3180c228436075693e98b19d50fe2a3347e4a4fba5c68fd56e3bb1",
    "signature": "0xd5fb17ba5781c082839cc2c0b26f78554bcbf0e6956c3a4c9ee4a57c2182f9fa5a5f04a06bc9f881afbed52e53961d8b054509fe6a6d776712378b075bacf7c21c",
    "signer": "0x12705C8Fe8CE886CeFEFa0d4d46E906f2c35C954",
    "userId": "477934274"
  }
}