{
  "manageEntity": {
    "action": "Save",
    "entityId": "1769488669",
    "entityType": "Track",
    "nonce": "0x9e68c246c1e2f501a83783f0e98ea720bab24ef41820fa9737b98e42027b592d",
    "signature": "0xc2ab568c979984143e25f6970eb14924d706a51fe8c8dc3597724b928681d2a25ff2ec2b32a8722a36304cc3e55a82ee6a1383cc97e7f43e536403bcfeba73b11c",
    "signer": "0xa82670FA9B885fC5E3790543627F6F4A7A5e6D65",
    "userId": "797142451"
  }
}