{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1104",
    "entityType": "User",
    "nonce": "0x377540263eb600bc9c0b4aff4a3a208f6b3a0ce88f9e276ffeb3c200efbf6b1e",
    "signature": "0x3c544dc6f846961bb76a154caba59d636dcca02f7820d7a72fdd85cdb56795fb1bedcfb537b2cb6b07e47ecfb67b37772f5073786d30657dd7ae354b1acf497f1c",
    "signer": "0x674FFC02F71bdD4bD3Ae60c618579EBDD541E397",
    "userId": "787787230"
  }
}