{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x4ab5a98caad3fb23a7c5440836a6d2c53c966b464a32d8b1bca75069e65e494c",
    "signature": "0x1b4bf652282229d032a98d744c1595cf5217225810df99002d1e2ea51c99acdb352787288b62362897e545173019ae9fd046f01f974c76c29e6f290272ca8d811b",
    "signer": "0x4F8e40E75E675f5be20520c4cEA0CbD7bBb999B1",
    "userId": "991796067"
  }
}