{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5b731a2a2db813b7f7df8b158f422c40816cb79ee09da0cd8ced53197f8f4704",
    "signature": "0x09a92e716891e333e249090ea8b827dbcfb7507c87ac39ea7c16fa5dda637d8c5186071a3773841f4f8263ca66c4f44fb0209340f905cdce0b80a63bab9509541c",
    "signer": "0xA8851F73422258a11f908B8e3f9453620E2b2467",
    "userId": "129291142"
  }
}