{
  "manageEntity": {
    "action": "Save",
    "entityId": "160169",
    "entityType": "Track",
    "nonce": "0xf5a6d8ad9d50281e2e9b7da6427fd54cd6a6ec4fedfd8c216dd899ffe3d07fd9",
    "signature": "0x4cbf9d623a819e7c9d88729fb191a0b8265c11673e31fbedaa644dc5fa56a35563fb4c7827e8592454e5f33aee4884d1fb0f0534cf578628752d37903b61e1e11b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}