{
  "manageEntity": {
    "action": "Update",
    "entityId": "867801987",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x53fb1cc4c7137b24a22848b17fc1bed71c04b2f2ab3ff923ad6e5affcc610e4d",
    "signature": "0x6e1b7ce992ba15334a06c8aef5210809c78784f89f287341f42d258b769449947f31345862e8c04bdbdc76cb4726deb998f0ef0c6530d9bb99b1f0fda79812af1c",
    "signer": "0x91bbADbc658270eC1a940AFa278dE21b9cE60a1C",
    "userId": "867801987"
  }
}