{
  "manageEntity": {
    "action": "Save",
    "entityId": "92175",
    "entityType": "Track",
    "nonce": "1788456115813152625",
    "signature": "0x7df65844fea974329d28fb388c070fcf6ac93db79fbe4f30e480ca9f348011091e8dd6505fade197652fcbba6483d6861fce2c6310b0bfefc514f87a1f068ce91c",
    "signer": "0xF1f4D1515EDE23445C949c6a8dBaE8a064153588",
    "userId": "199729601"
  }
}