{
  "manageEntity": {
    "action": "Save",
    "entityId": "7922052",
    "entityType": "Track",
    "nonce": "0x361375e81a4c1f3b36f969b8787f68264e294b79e999b80cb1a69dcf28cd2f83",
    "signature": "0x1d3c965e4538e3109b8452631a56d0e821fb8b112b5636b5778f13362cd9870255aa4a8f12b270f2055b3c89ec8d60a9949c5f983217249a8b42f0c1cf39c2581c",
    "signer": "0xb0bc7585AC84F169814851A3C22d8d92D133337F",
    "userId": "267657235"
  }
}