{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1880984",
    "entityType": "User",
    "nonce": "0x4cfca8b06846febc6a628dff91e519bca59d0fd6c3c6ed0a1c0114871ab45eae",
    "signature": "0x1da9a37e39e813dbd8754aef6e5c332fb88d9803235c223a505f014d052e169357d88b037592cef3666ab48bf6518a4dc65fee43023ac84a5175e9adf4991c1d1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}