{
  "manageEntity": {
    "action": "Save",
    "entityId": "227377916",
    "entityType": "Track",
    "nonce": "0x9c63989a3da45513c9ae17df62ad330f15d00adedf7374067925ba3bc9719c73",
    "signature": "0xc59bb14f00211b256da8512bc26ff54a90fb985ea1efb3d48b1d006f766b1d426fe83ffe8c387f96a5cfa2249063a85a0dca4b34d8b7421286d8c5c0e2779ed71b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}