{
  "manageEntity": {
    "action": "Save",
    "entityId": "1178062850",
    "entityType": "Track",
    "nonce": "0xe5999c3771930bae3d4400313a32e11b995c285528361cc390d7642efb37923b",
    "signature": "0x095a930999bced001b9a8fbcff6eba94d9b9c63c1fba7ccae0f8d12b7160a51e7a3ca48494612609c8511aa4c9566a4ec22ef1044a062135b76ff970507c2d211b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}