{
  "manageEntity": {
    "action": "Update",
    "entityId": "956151141",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x999a6a578e9b86cac5b13b4c5471c1e97411a598aa0c1d95d92469aff0bc649a",
    "signature": "0xd50525a86b8eead453ba6d6cc06deb937212302fd447684f18eff2ad3e66400126d5f5c8a31200cdd71524617a4ba66ad103675321edd87b35ccf1a8e6490b181c",
    "signer": "0x81d48E367830FA8FDC42cE7DEf7A34FefF7A6d23",
    "userId": "956151141"
  }
}