{
  "manageEntity": {
    "action": "Update",
    "entityId": "308261833",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierawcdmunwemqglhvpw6p24aztefiixekelhbh7p5yhx624m6ndxjna\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":616769041},{\"type\":\"playlist\",\"playlist_id\":1312755949},{\"type\":\"playlist\",\"playlist_id\":310612173},{\"type\":\"playlist\",\"playlist_id\":49522032},{\"type\":\"playlist\",\"playlist_id\":2015068156}]}}}",
    "nonce": "0x57adb7c90685520b6c35f8f9e4c8838ab0ebff5fe019a3dfcbe4cce5e89acb2c",
    "signature": "0x6d247896c6e91e5dbbf5a8f207d852d8ec979449f64fadcadcc6637fd0e187b93264c805ece95aa34923f1e9bc5a87a16a2eba96150eb5fea09e3ab890259e611c",
    "signer": "0x4B0a22A25ed0c580309e8a5565722854C6b7873A",
    "userId": "308261833"
  }
}