{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x40e37e0ec5d733b0e704d36683cbf935f76b211bdadf7cf14f353d66f5f3337e",
    "signature": "0x25f01d32a6d87aa8cfb6d134e5ac2d4c46b3ecd73bd297281488b62864166421358c6fd7ca38bf582f7d14aac7dcc6fa52eeb047930a233abc8c99c725bafaee1c",
    "signer": "0xc3414CC9557B9660629DE81a76b7466fbE8CE07d",
    "userId": "902798305"
  }
}