{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x222c691598cfc5c26e6c92b50cf2a9c915f0ec412ff919c7e264b4bb69e4bdef",
    "signature": "0xe0b0ad646ee90e58628ff4efc3c3494f94f8e83554c885d113b326de6604da8a4b14411fe328e5a4011734231830cf576167155885f53205c06a468e922171f01b",
    "signer": "0x64F9729C679Bb5C94De3ad988ecc2569757124C8",
    "userId": "440214081"
  }
}