{
  "manageEntity": {
    "action": "Update",
    "entityId": "945306948",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x44600455b987c189aa23774388469a7a1df56017059d3613281cdeaa7dbbd60c",
    "signature": "0x3af3afbd8312c4ecaff3e86c0aa1c7ae0ace68037c8310cb5244d0341933eb5f0e6fa52b650e8e76f0c1f5e7fbd7789ba9990c2d9c518235425f9252c9df1def1c",
    "signer": "0xd556c9fe2A1baa2520F571cE4facc0897109a045",
    "userId": "945306948"
  }
}