{
  "manageEntity": {
    "action": "Save",
    "entityId": "846401634",
    "entityType": "Track",
    "nonce": "0x5268cddf9d8ddfd14e29b4e15408f397f7eaaf3a93b2a547f37e44ad6292b30b",
    "signature": "0x75fc96de0b890f4b55d491f6e512577cefc8a501590bc71970857ddf5d576c5778f1ce74fc9196577ae4083d3a3c50f5199ccb38af032b5b55bbad90a64897341b",
    "signer": "0x6AAB6EaEa3f7F15750b649C269b0391dcB19dEeb",
    "userId": "92019297"
  }
}