{
  "manageEntity": {
    "action": "Save",
    "entityId": "2077579810",
    "entityType": "Track",
    "nonce": "0x69ed62c4f32df8032ed725bf4a1ef4821a0588ecd8c9ca02e7bc1a160c315016",
    "signature": "0x37eb016333da5a5a64e51a25096206bb32c6269f35e17a49e583c36ea39ec6250e33b7a9017cb5fe24d57875bde10f53af71fcf92c968009e5717ada5e0e8fca1b",
    "signer": "0x27204C77Baa4a510c92A96A4ba3661CC53EE568E",
    "userId": "35918963"
  }
}