{
  "manageEntity": {
    "action": "Save",
    "entityId": "1065096255",
    "entityType": "Track",
    "nonce": "0xa4af1965752ec7110ac2b7dfb1ac16193ca6e056a5788c8776fb6badea553796",
    "signature": "0xf34a43862ee383edcdb65150e7cb61c0225b2399a93b01fcbefe892c7abb71f827ccf55d81aaeec00baf91fa31f2933187a02320035cca5ae95d45d58402f0391c",
    "signer": "0x26Feee0AaDc0e2d8f7aBEd5cdb0bCD7D325F618d",
    "userId": "354535"
  }
}