{
  "manageEntity": {
    "action": "Save",
    "entityId": "1042344",
    "entityType": "Track",
    "nonce": "0x00b460e28e8d2fd5527138bf7bbf08a7ff94a2003896ba2324c3e3263070f2de",
    "signature": "0x4d46c543d3bf6ff539a47504b5e3b7d0f974c91917d0969e7659edf62a74f5ac4796d1013ae1f173650b11a9074d9bfd3a1ded07d6c024caae1ccd2e22494ac41b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}