{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x13c89b5b95273ae99fd1397724087b79b5940ba0279b2d2507f3f110de88404f",
    "signature": "0x61f568eb60432198e1b3535940e16ce58eed5a66affcd51a572b386e0f27bbbc1f990c2908790018d8190d1010bdbadfd3579014377ff1850b9eb4c7d10a26cf1c",
    "signer": "0x715cFFF87b8c59a96a0Ac120C6865d50486dB9F9",
    "userId": "706102855"
  }
}