{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6529030a6619d90da71acd71533c33945e99c9b6c18ee00b575053200e4fd9c0",
    "signature": "0xaf628b2eb12c5c533ca7d5d4282ed3897adaa8ee7d375137b18018cc1bef249f07859e1291310164f5c06a7e28c27d81a9f253b26fd1fdd6e1c7ee76c4f27eca1c",
    "signer": "0x9C272d975b8a58D6730117A600Ad9254EaBB1be3",
    "userId": "754168227"
  }
}