{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "819578939",
    "entityType": "User",
    "nonce": "0x21d8dc8e4e6ddf241e719635b24d5758e4c271752ae2eb5327119bd99af8f69a",
    "signature": "0xbad93276abe9bc7e89872aa62f0e8df6d0a72314e44ebb732c3474abd28bcd7a23cf90ca1bcdd386ea31afd6e381b7ba7101343d43983ee282026e78afa97c2e1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}