{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x107b8a37486838d07b531480aa8db3f93a245224a14f50980e87a0918bbafc0a",
    "signature": "0x5d1d95cf1475154bf84da34bd269883e3a753f9c935856740fdc5e659ab852a56c5937aa46c78ec2753e385ddf6cfa5330318ed86543c071b0e4432cb03a71271b",
    "signer": "0xc5757d539099D428d30717B49A720B70BFc6Bd9D",
    "userId": "151843739"
  }
}