{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8bfbc8145ce01ef17f64579b1a79e67406732ddf74685339d421d73da07f4c42",
    "signature": "0x45c8298f5fdf541738186f5bb93915facd0242b9b4d1c89cbf60c8f616ac21e42e93a0ffb5dc3daaf9ea9c6a12f1c1f3e81d9b3e9caff57a76061151835d62561c",
    "signer": "0x5C3ED23667FcFdce6d7D7E645C5F96878Da6c74A",
    "userId": "110794540"
  }
}