{
  "manageEntity": {
    "action": "Update",
    "entityId": "850489604",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieravpe6kx2p7rbq4xsgt4gtumpe3m2hwrzmkspnxraihcsbsovonyda\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1248699039},{\"type\":\"playlist\",\"playlist_id\":641724839},{\"type\":\"playlist\",\"playlist_id\":2022877432}]}}}",
    "nonce": "0x1911986b1d457165acf2e3aac1073379664faad312604f3ce989294a20b4b3e0",
    "signature": "0xbbeb3ab94f00695245c0d11a3ec9be54373edbac21c3d14ab8057523e4d1331d370b32f1589a86b06f3b4400a7e99b2e79614f98b721244d3051ab2a4e6fe12a1c",
    "signer": "0xE58798A8eCCb4b8474bdDB89D94c8151E7BD4D10",
    "userId": "850489604"
  }
}