{
  "manageEntity": {
    "action": "Save",
    "entityId": "897095068",
    "entityType": "Track",
    "nonce": "0x28a4f9bcd1baa4540a3d5316126871fa2c05dfa1003c62c177f7a92428d45dbd",
    "signature": "0x131f1f65645dc08434aa79c479ae3f12ed71866344e4c4f68fd338936917640055ac820aa6ab247615df437e2ab9076071bb02d52bbd72d6e501dc343548f0081c",
    "signer": "0x98fC2b30E6e70e62dB2b5fAE7b0292DE3D4323Bf",
    "userId": "480962013"
  }
}