{
  "manageEntity": {
    "action": "Save",
    "entityId": "110265303",
    "entityType": "Track",
    "nonce": "0x8725a8b5116108abcc7f9ec89e5ef3b2ea003418a4de9816c5559730733d883f",
    "signature": "0x641e6efc1d6931c816a90af18c6d9e5ccb862fec74860404de7e48fe0c8008824e7d7097e314b0065fddaa298dd07ae79b35aa12c515869e77c0bc25c3532e561c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}