{
  "manageEntity": {
    "action": "Update",
    "entityId": "200742055",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x510f822cf0334b68f0f7dde29b74cf6f79dfbe805d541944df12dc8c2e9c0bb9",
    "signature": "0xd3e1e0c5151ea1b5d19be96858b4110b37a2d83d48e9d3f5eef9e565663363db7f7dec6c2fb55aee28d11db34a9c4cec2c9854720399b05551f4f9e18a1ae51d1c",
    "signer": "0x8115D0ebFECed33C8DCeFf242B1a6a568F1260C4",
    "userId": "200742055"
  }
}