{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "615483876",
    "entityType": "User",
    "nonce": "0x460745c62fc479e0bc5e6d7b1b7f8fd70b74591ba6ec8d0e1c89ce42d79ed507",
    "signature": "0xafcadaa7433d8a36fa17cf95c2b3ace5e202c4eec05fe063e59973894f86d0970462c7e46b75945dfd35bc9a2bdff077f0fa2c3a1bd538e6b9fa8141da773bbe1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}