{
  "manageEntity": {
    "action": "Save",
    "entityId": "916227013",
    "entityType": "Track",
    "nonce": "0xdad97621b4e061380897aa8cb86b15ce7474f406bfdfa0de0bb5bc06efff4527",
    "signature": "0xe0b19a91430a2aba05ec7d58c80062aaadd8b09266e990501278d9648a5b40836dd1e514b6d23ce18f19375f2df039893b3fd85b9a59a771d11a582bf3268c341c",
    "signer": "0xc97A6025Ad8c7Ba1a35Ef7E3A3b88ABc8b2013BF",
    "userId": "666092734"
  }
}