{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa0d62278539e3e3830bb3230e9d1b3a057361d28b21a9be1a610f6dbbe0d00e9",
    "signature": "0x72e2beab7898b6322884590dad07415c21ee994ed0fa2be7839d93370c8db85f0abc1d05d8f8b253d2f4cc1d67278784ad9e642a9c5b41f5d656ebd03e7fd6ef1c",
    "signer": "0x52e6cE7A2a4Adfb27641123E758939eEf2f3284E",
    "userId": "221225273"
  }
}