{
  "manageEntity": {
    "action": "Update",
    "entityId": "308321023",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf91082208b6b89626051bb0f2e7234cfa2ca768418686c119e51ae03ef962592",
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    "signer": "0xB48f32921b2A08f9EA15eaF1d1DFc9A33087528a",
    "userId": "308321023"
  }
}