{
  "manageEntity": {
    "action": "Save",
    "entityId": "416192",
    "entityType": "Track",
    "nonce": "0x1b2d7179321232e74bbf284df8993f33b6232a902699d13dfa0baf0f8d254b46",
    "signature": "0x6001aa931cc6baa6737fab86276ced123188efd60394f8dd842fa959e03bcb2308702788802fd58c3824173baf8ea8a365476f05f0783129516319457dd7f7241c",
    "signer": "0xCedE64dcD8b0FdEDBdADF4b0ba433797eD6301c9",
    "userId": "638733607"
  }
}