{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18278",
    "entityType": "User",
    "nonce": "0x17fc64c2bd787822ed1b469ced5d3ab20b581beefe8242a661c4867130c0bc8c",
    "signature": "0x0a945f53c0f022e95652026cad7dce29697c35598f4d8fe014fa5ae59e7da9d676102e88feaa6053b9f5136e4a81d8bc3579bc8bc262791bbf39f4d217a2ff651b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}