{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "940003920",
    "entityType": "User",
    "nonce": "0xf812d4771f639f4c046acc054b692fe354e3a7b19acedcff3bd1de18be7c105e",
    "signature": "0x2ddb108acc9d12b8eef297b4b8bff50f8cc169cd30e2afa6d4a2466c6806378a5035fc4b59ee0eac4ad114a46ebf437fdd3d55991ab259c7562d4b00605d831a1b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}