{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "545584",
    "entityType": "User",
    "nonce": "0xf44719ff4ccdb1b01fe9ac16ee1a2a83affa08a117a34ef909bd87697250de06",
    "signature": "0x82b500dc59c7ed90be40c14ba1e40a78532c62c2a4e7fd4153dd2b825d9b6a16592c40a9fe94380bd75acf0b26ce22fc038d07501ee757dc7ca46e618fa664631b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}