{
  "manageEntity": {
    "action": "Update",
    "entityId": "775902397",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x877d5b4ca6c8a4ae32ee5c259fe1373023d6ca7b37a72a4b5ab75e5a4b64abbe",
    "signature": "0x76ffcbb94293b7c718d65826de673292170e9a100e2658c0190c49747808bd93562599c8258e4b6d7931e665e797159cd65770ccaf2b59da061ec626aca4f02e1c",
    "signer": "0x893daE12c229a5429494928c551Ed6e66Dd07A04",
    "userId": "775902397"
  }
}