{
  "manageEntity": {
    "action": "Update",
    "entityId": "149566028",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x291cc1d0a188ff270361cb9b36eeae33fa33372f9b641a9aa2380df09eeb6636",
    "signature": "0x7be8de0e0e17b1353581d433489476151d8e19eae79a201278b942c3f48a49661cdb144c4768fe4c43d33c2cc5b0ea50612edc68add823f632de131ff0d9378a1c",
    "signer": "0xfa1f98f0530E55C2BEFA45f0F1B3A699b4559136",
    "userId": "149566028"
  }
}