{
  "manageEntity": {
    "action": "Save",
    "entityId": "2051259563",
    "entityType": "Track",
    "nonce": "0xb474c33fbf0d99b6e61452a4b55682103460ff43609eb58fcd0cd4b9da509fa6",
    "signature": "0xf7b3eea000e6ef357cca846c1f7aea108073a28882b3437359ff48c1408e8cdb74d11800ae002128580aea90093e9fd268913cd8913ef400091b443cc61d4b511b",
    "signer": "0x283a6Fd0bE176865B404dfc3B2805D3a2701d62e",
    "userId": "484365174"
  }
}