{
  "manageEntity": {
    "action": "Save",
    "entityId": "1706904312",
    "entityType": "Track",
    "nonce": "0x853cedf0fd5bf7435bdecc93ca29e78a8be867ac7063e9ef1667edf18b6ba18e",
    "signature": "0x30ea7902233503fbda6dfbe20478a4895424cb292ae81c2091334c4384094811014e94447cfddde8c54ca3afa74047e5201c6e06e3316ea1e3aae85915b016271c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}