{
  "manageEntity": {
    "action": "Save",
    "entityId": "928363399",
    "entityType": "Track",
    "nonce": "0xda377b484ded6c464159b869e7718f4e5fe28b798a6b5178b51199b5b9d10a5e",
    "signature": "0xa56a5cedddbc362688119eebb1d0bdcdd66befec64cd4a429e325653a13edbe7648e598f95612dda619bcd6889238c02e08955afca75feae4a46c0692d60d6cd1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}