{
  "manageEntity": {
    "action": "Save",
    "entityId": "956023",
    "entityType": "Track",
    "nonce": "0xdceafae949836865ccad53da7a285265e88bf95421070c9b766ced02a98b8e68",
    "signature": "0x95bd6faa1385c8b4b9052d192accf831517f88fda0e3f1e886bff39fd5b2204b05b7ce4c8979811de33690521f5743d93efa8a87ed313d6ceb04199d5089698a1b",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}