{
  "manageEntity": {
    "action": "Save",
    "entityId": "1069230",
    "entityType": "Track",
    "nonce": "0xbd821992a2a912714900ff9c5bc714bc5fbc34bd280f9388b34e811be615aada",
    "signature": "0xec0de0b24ad2b43e3dbd74e90f80aec3890e37b4ba22115f8f468765df53a0a3060a214fea63c2e0b73e1c5e9d9b98dcbd14b4075749969b28a9128c4c6e5fb61c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}