{
  "manageEntity": {
    "action": "Save",
    "entityId": "195931964",
    "entityType": "Track",
    "nonce": "1792087162531372253",
    "signature": "0xf62545d1a34524460c72000cbf04352ac9f8d70db460407a2e830692d401d0c065f222a66b4cb8ca530b8b083954565375f398894ba0cbfd6186fc92fba2e0b51b",
    "signer": "0x23dF8876fD80368D375d911e3CbDFd15B8e85CB5",
    "userId": "827420993"
  }
}