{
  "manageEntity": {
    "action": "Save",
    "entityId": "270127111",
    "entityType": "Track",
    "nonce": "0x225fcbf8e5c6089b86cd3d58fd56f310a5a3bfc12fa985f844fdcf1302847965",
    "signature": "0x6289eda2c287f29b8bfecf72f9127a0fb80e589f8cd1d7d6c3bedbf7299df0f239f695079aa31a5c7b37033ae9a623ab9e2094f9e7f9574ec449c608d1b446db1b",
    "signer": "0xC041f26f283EAf5F5C78Ab3694f6517cd2d3a1F7",
    "userId": "93075"
  }
}