{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xde99aa6b59523d657f6535aa2a77d319a92f348d7dfef57543e2cb352e93a0bc",
    "signature": "0xd872a6719d2c3c4de0ef8bebd94cef6fdc3d1ea2e6e2f40295c3359673eba6b026df301d1da77cf35e03adf35cdb8ddbea5bd0b08592258531cbd0136aca89f81b",
    "signer": "0x8D97512D0C3C35eAC4B44578a479bcd8266b68Ad",
    "userId": "503182302"
  }
}