{
  "manageEntity": {
    "action": "Save",
    "entityId": "2139115272",
    "entityType": "Track",
    "nonce": "0x3aea22dda7336089017984a4fc0109908d7fe811be0e45cc62abe7f1a73ef7b7",
    "signature": "0x731c023f5e62df8b383d37dff51a7f6cc140dcc62591961d7996e5f452527eb623b45bc508c825fbc9649be80c0834a62b462e62b02f75db7158afc7b692d44c1b",
    "signer": "0x6245d270201FE6e26477efA986E8C4035bF65C71",
    "userId": "36222594"
  }
}