{
  "manageEntity": {
    "action": "Save",
    "entityId": "1595331283",
    "entityType": "Track",
    "nonce": "0xc1fcdc2fd77d6c4ffb08c8d87870c8d87199f3867272e0cfa5287947b34f728d",
    "signature": "0x010f71e90ffb7c6bf9cac0e685f41c3355756f30512b469604085f28580b5134780af7db2a641ded3103e6afc7eda486861c2be051a503f3a2628c48d5f4b8a11c",
    "signer": "0xdB791822A11f5aDc830669bdADa8121a4558D7A3",
    "userId": "347139808"
  }
}