{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa8442448386f84f89a4b53ca879dbcf05846292ccc23b960ba9b24f154b968b9",
    "signature": "0xc84d06172e919b575a1a31a61f800c89e1275604dc72782582128c25c598fd4473cc7c963f9b90c4b05884f86cfc6964dc83a422a78b588df58cb56412bfd1861b",
    "signer": "0x3e327C81B6c731B6c03844a03cb5734C5B4E4F02",
    "userId": "144940198"
  }
}