{
  "manageEntity": {
    "action": "Delete",
    "entityId": "491500313",
    "entityType": "Track",
    "nonce": "0x77172c2acb56c3bd589eb673f43c28404b36426bd1768a4bf03beb089ebe82d1",
    "signature": "0x5dd0ac50925850042e035383b9d80d4843566a3f79acb51e92d13eae761de6e56b62daf23c2e42ea5c32016acba0fbea89c375138fb9b064955871c57fe351d71b",
    "signer": "0xcB0cc6764C9023b8685E78148224a9467967E228",
    "userId": "104731"
  }
}