{
  "manageEntity": {
    "action": "Update",
    "entityId": "776527610",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x555f382217385efd6b6a0e03a7f34be482854e3c519bb9df0849efe3396e64dd",
    "signature": "0xe4aca6857159c2ce4b24c2243ba8c9b51974f1417982fcfc64662219af27094e21ed2cffc9cf2ae5ffdd065b396d3bd1486abc1486dc4b8ddb5a6a7b39e57c5f1c",
    "signer": "0x83E9E40fFBcd91584A44bbbA70a2fFA4Dc55d5D3",
    "userId": "776527610"
  }
}