{
  "manageEntity": {
    "action": "Update",
    "entityId": "208431511",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierauszf6l6dgf6j43m4bh6wgfw42obrevaqy52ieedndqu3iyk3z7ea\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":37967}]}}}",
    "nonce": "0xb402d365256bf64590ed44c0af5d569a61292d7c6b7d6d50d99b717aad7fb91a",
    "signature": "0x8984cf644df32a4e24d55130a8e5442c6224f5f3d2787cd62a88574bcceabd6467c47c96b4dd136fdd5479f52e1c60768d4ad63079bb65a4e040deab7a2dfd771b",
    "signer": "0xdf555AE1cDda83689Ca8307CbD9048AF27b89b69",
    "userId": "208431511"
  }
}