{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "607647194",
    "entityType": "User",
    "nonce": "0x313d773b1b211a56d92b37d4da95d5c2a110bd6d5d59cfd31331141689151a10",
    "signature": "0x482333ff7015c776a96479becb416db4210b799cf7a45b4308cd20f4cfe54e3221a5b8bc048b5a02f844081c28262429745e1b849a0ff4a34a53664c1a372ff51c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}