{
  "manageEntity": {
    "action": "Update",
    "entityId": "237765871",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4cba554566a2e50831083ed33d9349d15ef8bb996116c3406057d0ab28884e11",
    "signature": "0x885da486f881de5fac8954994175d1742987ad45561f43cf429c7eec755451201d832228ce3303916020fb4e27bc813f85f3ba422f474957130c8cfe570440f21b",
    "signer": "0x8c716F932726b40bC9E1CEC18f2c93dc876da1Dc",
    "userId": "237765871"
  }
}