{
  "manageEntity": {
    "action": "Save",
    "entityId": "1130153",
    "entityType": "Track",
    "nonce": "0x169f558227a159f08e6621450b494000aa7edd2ab17d45847a5ca5eceab09779",
    "signature": "0x1a66b44994df4e0c65e30ce076b7aed9fb24b317089e50e343a85ecfc189189e3ac64bb93d3cdde9da08f90602729103cc63d76cac36d93779151e2f8582578a1c",
    "signer": "0xD65418037f9b8653C61558a6A2445F39631E0789",
    "userId": "247970151"
  }
}