{
  "manageEntity": {
    "action": "Save",
    "entityId": "1175926203",
    "entityType": "Track",
    "nonce": "0x2033125351f722b90f1e4c3dcd9f4f82381c25c64429de91ad24bfbe084c9293",
    "signature": "0x2e731159ea404f237fb25fd84d02985d8deb10fa04adade7b245128e6b545d3859e27c1253c9aac9fe29028bf16c2803f9d830e6accee9e744e5bf328a591adb1c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}