{
  "manageEntity": {
    "action": "Update",
    "entityId": "328828428",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5c9c37ee47b1d94a926f8aabd14598cd89244b80ebcbe7acbb2f121c73479629",
    "signature": "0x45fb45b8d6c6ca7e0d15538ad8ead1f360f3f743d57d50bea1d3dfedd0d671e310fae9b08a564bd66de59e649a3a519ffa059e8f46543dd01e56f717050cc5051b",
    "signer": "0x3cEe8ddC12dB405b52FC2a34764302D78C6E9d3D",
    "userId": "328828428"
  }
}