{
  "manageEntity": {
    "action": "Update",
    "entityId": "575254579",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x5c77416c85a35d5ccf6653935d8c0d8bf09c547c2a0ccedb3a356a39de9fe5e8",
    "signature": "0x6c037cb1e69cb3e0f1f2d5c58b3b8861001aec7e87c9da1f7491db349a46ea01615f9f9bae9fed740492708c2e66a4da1ddb9a955255561fb52bac1491c6b9741b",
    "signer": "0x09B272A00c21FcBced8F768468e39b2de1081C1c",
    "userId": "575254579"
  }
}