{
  "manageEntity": {
    "action": "Save",
    "entityId": "841698766",
    "entityType": "Track",
    "nonce": "0x78c4026f2e4f2a899fbc35c108f9dbaf7af9c4acd4e71c8b1eda774fe15d1a95",
    "signature": "0x735da09bd9fa1625ab0e17d148d19ec6337d5f95abbc43fb857e4ebed3c1f3e957e12ece1dc54619f7d259492c623e913bf704be22204ce581880e545a5ac5c01c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}