{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x73ca86b41f3cdf35c9d60354ecfd8c519ac20b80da1418607e3a7aa3e3c52136",
    "signature": "0x1968b72babe7395e1790ed8b8f6926b3e08a5f1e5ea211d5a856507a720a0b276f765288a054d81223f81f37ac0b115fcbdafaace3181ff22261d2ae65395f421b",
    "signer": "0xCb76d1FbF2fB7395bc265565bD8dA26F7b76c976",
    "userId": "972578736"
  }
}