{
  "manageEntity": {
    "action": "Save",
    "entityId": "1044930839",
    "entityType": "Track",
    "nonce": "0xed8e58fb3e7d2270adb16532867f4bc85d77b21854c9a1bbec28c84d87fb8834",
    "signature": "0x1e29caf4f2ab79ff66b27cb7e4abe5652f22b99544fd1a2dc33f8016578f04be105b45f04f60a251480b99f6c230de957fd4e1582150a9f9cc61a61a770972291b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}