{
  "manageEntity": {
    "action": "Save",
    "entityId": "1880195410",
    "entityType": "Track",
    "nonce": "0x3351f8fed056c82b4ffe919813b66b9f5462af45514778f66218e3e9fbed4742",
    "signature": "0x75fc3c72e312ac099c66d7986d15fa79bba057d01a3c8bba8dcf43f27d384402660a7981d69b18f161437bf88f3b0e70c4d1b3577614e4668bdd360e6a2c5f521b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}