{
  "manageEntity": {
    "action": "Save",
    "entityId": "177097596",
    "entityType": "Track",
    "nonce": "0xf3bb803c41d70d44e108f21d4049cafa4eba28e34a299db83a93cc28af81f2e6",
    "signature": "0x18e5153dc052cbd64bca9c085f06f1c3c185a701191e5a6bcfb00abeec3acadc3ec6912a82d26a5956164de4ad2bf2b9aa3780496d57bf7351137a43989374fa1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}