{
  "manageEntity": {
    "action": "Update",
    "entityId": "972881769",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"title\":\"The Crouch\"}}",
    "nonce": "1792337290140677166",
    "signature": "0xc1be8d6dd083bd8b5204e237cc44800a7b0ce376bb8a7ba3054e11bdbed067077a5745c3978623b465fd05e9cbb1dfdb52d32d877e0d33dde35e2861b493bc9d1b",
    "signer": "0x7d853670b15a2150BFfd80b516C26EEd400f695a",
    "userId": "850116073"
  }
}