{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100976759",
    "entityType": "User",
    "nonce": "0x61f3dbc349828629de769bb73eaf3830d21bd1d48e2e653171fccfc970c6a978",
    "signature": "0x13b4b39580c98ab5fef1eb4197bcb215ccc18907c3e805e4730eb6eb305a1f4133b1ffa8dc6ed6ccbf5094c2941e727ad17ca4009a3f6de822f438f0fc6c62c21c",
    "signer": "0xDDCce44d487ED1f7297d836241df35AAB6D867b0",
    "userId": "22610281"
  }
}