{
  "manageEntity": {
    "action": "Update",
    "entityId": "300815705",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe0411281a5e275c524f97c1cfd2d2c38cf009b69ea860a33588f49f9bdcd3e18",
    "signature": "0x5547823ca92c255284f9c3ee6459349d72860893d48a068a983a56fa49840c16435bd6509d9d1aad22dbc86e9a5ad666833da57a9292b6f9ba556051dda736521b",
    "signer": "0x17E5Cd991203390519d2FC47aDbaC0DF4B27bBe3",
    "userId": "300815705"
  }
}