{
  "manageEntity": {
    "action": "Save",
    "entityId": "2024932559",
    "entityType": "Track",
    "nonce": "0xb581ac359d8ce739a745ee59d747e570cfd27dfc8c7679342b2bc772e6bb308e",
    "signature": "0xdb533642d83e2158d123003c85c109810e93c92fb3c73046972a2bb8b1d7cfb1143f541e6d02929f7da0cfe1e1022b6d26336f71609231865ee52278987c05051c",
    "signer": "0x58501cE232db1f85664761410c7F8FD055342AF7",
    "userId": "123836"
  }
}