{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "329",
    "entityType": "User",
    "nonce": "0xdfb6636ae90c38fbc9aa60a5b1f3b4f6adb329d0e8d34b53a06e861029b3e0b2",
    "signature": "0x2007dde47c182cd9ed5d2f7f55910ebe4332c55387d6376f35337e46967161e20e75efd5464986efb97f7e492bb21b83d2167eae96910d3aa8862d9f3749f12d1b",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}