{
  "manageEntity": {
    "action": "Update",
    "entityId": "308623477",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierauqv4xo7lpftzxlg3xfbsk67cfwuwpcbjheuasa5gxjcrmzwdm7uq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1647181557},{\"type\":\"playlist\",\"playlist_id\":1335713567},{\"type\":\"playlist\",\"playlist_id\":1905553911}]}}}",
    "nonce": "0xa2ac36738f352ebff66ef5ddc5de56943c7e41b390b7b1ab221bc04056f798da",
    "signature": "0x4272a70620f4d1e20589c87a4c31938233c3f5614e630fa4e8f147365d0e64da66e3f9e5bb57f1b5fd38589388c927da505aa3924d848b4e7c240ca3e48d99b41c",
    "signer": "0x6D743436eC5c0BFbaF82Eb6E5c44B035d345931a",
    "userId": "308623477"
  }
}