{
  "manageEntity": {
    "action": "Save",
    "entityId": "1626369179",
    "entityType": "Track",
    "nonce": "0xd8e9f7ed0fd2dfda6bf3dd7070bba3a05932cf0bcf14021b03236e05b5622aa3",
    "signature": "0x84e5a98094ee86aa43ab3e4eb2f7006bc1b99cdf98c87e3ae789700842c18cb6138942107144332c429ff426f820725b67383c287cf7bae42a927f31a8c4961d1c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}