{
  "manageEntity": {
    "action": "Update",
    "entityId": "209707164",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x4614d35f57489e634698f25368cbcbd9ba1a170f29840712c0ec937eac893ed2",
    "signature": "0x62d2bf6a3ea527a98ed2c47bc8b274cc2b02d292f8b54e12a27905437b9e18003447c1bf1413da09b712cb8ff9122292d2cf373b63403e4914a211af2eb42dba1c",
    "signer": "0xa9C1a2BDeD896d3f122E366aB647BF1C74C00eBA",
    "userId": "209707164"
  }
}