{
  "manageEntity": {
    "action": "Save",
    "entityId": "1536351482",
    "entityType": "Track",
    "nonce": "0xe3d5da439056ea8045a8894111ded0b77094caf61747a5286b59f490e2b1d832",
    "signature": "0x1325784f34cf77aae6dfca3aed60fa703852c2b1c90e5c1bfe8038007a9fd72a684a2abeec936ff04d431ca7fa1f8c698860052896ca996b1a1a10f45592425f1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}