{
  "manageEntity": {
    "action": "Save",
    "entityId": "1865085077",
    "entityType": "Track",
    "nonce": "0xa82c78bf9e6cd56f305f37bb3a9d93b87daadd8bf977f4363db8f009e74c198c",
    "signature": "0xff1508b2bbc002acad4fa4e519c557253e65fade6671cba8fc29df9924aa8b3d38d680b7e20551f98a8ddd08f9709d0b6a73faad333f567a4da6b61f33a20f481c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}