{
  "manageEntity": {
    "action": "Save",
    "entityId": "797996940",
    "entityType": "Track",
    "nonce": "0x9651334ee5a182116916674a0a42445d4907ef1be152df3bbfb43425900bea80",
    "signature": "0x17a1f7d5f7838082b184eb388baae86dd8b98945bc67f1039f617fdcf259654e3a1a87302e6bf7381906d3586da5e042720590b4102b968d79c310987ff3dee91b",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}