{
"manageEntity": {
"action": "Save",
"entityId": "1928975016",
"entityType": "Track",
"nonce": "1792407437499388896",
"signature": "0x8713ac4b927784afcead4264b9137fbee9ebffda9587153a69181f69b49e6f6b267334d71d0649ee3415aee744ccbae428aef2c7f9df7f755f6b0c48436b1bc11b",
"signer": "0x6620103988B969bE5810F1B5530c1A44Fe6048A1",
"userId": "568518925"
}
}