{
  "manageEntity": {
    "action": "Save",
    "entityId": "596369736",
    "entityType": "Track",
    "nonce": "0x9ff72bf38401ff407100cfcc2682a88b0b44dfee0795ea248aeec0bd19e11af7",
    "signature": "0x99e196aaf72d06076e8d45f6cc5fe9d13b3165d009b9837cd8492f08f25048e95d8469df2ddbdb07c0be1ca972a158e13b94af7dd956c5196969a6122e2005791b",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}