{
  "manageEntity": {
    "action": "Save",
    "entityId": "609626112",
    "entityType": "Track",
    "nonce": "0xfb362820fdca35400797b57938295094684c70478fd98692170976fc6951f1b7",
    "signature": "0x0dc11ad37ae6b70b3391b9588ac069470f3557a4d83ad4a96339ca45a89db83041c2c41cb281aa32f43ed950c36901836b1248501e53d665ba0f265a70dca33c1b",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}