{
  "manageEntity": {
    "action": "Save",
    "entityId": "2106752349",
    "entityType": "Track",
    "nonce": "0x15741832e2f2d2a7fe64d6dd302a0bf05c426c369c988732d36230d12cb16491",
    "signature": "0x9b4f2d84ffd13617c680f4948350beb9c6414a074e603e844143f240e2fa6433218b6192f91dad796add5139b70bd58b37b171ccd499515fcecad35db52a3f121b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}