{
  "manageEntity": {
    "action": "Update",
    "entityId": "581465865",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf05c99f3862c9d13c7b6a9e6575fb203d7d2a7ba48f7c7a232cb3e8b3a003ca8",
    "signature": "0x01ebbb05ebb9425124227cced27247a23715627e14f3ea09ae94c8079b0f4a6a33d3850b8e4d4437b0aa1b03d006ebc27cde94fff29f1238609017f37e818b921c",
    "signer": "0x85c38463b4Fb936eC315485c2360b60B2012Cbe1",
    "userId": "581465865"
  }
}