{
  "manageEntity": {
    "action": "Save",
    "entityId": "785329287",
    "entityType": "Track",
    "nonce": "0xbc29aa774c6d99c9348a9c96c99852d8b5e746722a5d21bfd91c35107ae5d8be",
    "signature": "0x35116b3e11e5cd6ae38014ba573e1c55efdd8e52acb8874b0f98d1614705aab95daa10186398f61e47b0f9288adc2f0d7d41cc65e9dcd30c544957ff047f8b6a1b",
    "signer": "0x9369ae91F6A1cC4996D9126FD991d64e7E24c805",
    "userId": "333763354"
  }
}