{
  "manageEntity": {
    "action": "Update",
    "entityId": "157705806",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x3190a82bd0a2ca19c013eb22898a2e8e009c383f8b9911df38a6b9e9ba80d693",
    "signature": "0x76d9da0a9c656857d655c1f3c6dcff8c22e8a97af15e349141c92403dbcd4f1f13bf3c0bbfcaa8df1925d1931893c1268e79ab1a97bb666b9007d507a207996d1b",
    "signer": "0xc8224Cff31D058DE8F508F21cb5d062fdf26a93D",
    "userId": "157705806"
  }
}