{
  "manageEntity": {
    "action": "Save",
    "entityId": "1032907",
    "entityType": "Track",
    "nonce": "0x6137c13d5992c7a7689e9e2383f4bd34b4338f7bbfa46d0b509f30a53797526b",
    "signature": "0x04d0330caf3cce65246bd580336021b5273353d76645b1a0de1224c252e2eb270c35bb42adf0c771252e25cadefca80bd573dca7041cb31c031144fdbd52414e1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}