{
  "manageEntity": {
    "action": "Save",
    "entityId": "1180022943",
    "entityType": "Track",
    "nonce": "0x5d6b9944313605df0569491caed543d71a2dbb084c7bcccb0a345452ef736a33",
    "signature": "0xe388a5c1e909ddd577b78d28d1d0d638a5380208d209ab202b278d82db3d0f1e013bd8a63eec0f5ce1d28bf23377bfd419ee2202cc85384c5dadcb76c43ff3be1c",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}