{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "104731",
    "entityType": "User",
    "nonce": "0x834a202834a74ac08aeab886a5fda55ed2483a2ff45080f2b8932ec1d46118e6",
    "signature": "0xa9c7afeb96ecea6b64aea4a732cc5c31ba009784bff0a6d64a0064fe4bd51f77768c880bd148f4bb33648413416fa391012e4bad40fce37eab7e82c2b5c8fc0c1c",
    "signer": "0xDDCce44d487ED1f7297d836241df35AAB6D867b0",
    "userId": "22610281"
  }
}