{
  "manageEntity": {
    "action": "Update",
    "entityId": "55349",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieramuwjkwtghtj4jswxvwldih5soj6mhnvir3rk4f4b4y4hhj4ob6ha\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":54450},{\"type\":\"playlist\",\"playlist_id\":1053112790}]}}}",
    "nonce": "0x214b4a8e3d7d7d33d48dc80d941ac93635d17ce69c470f82729c5b7a323382dc",
    "signature": "0x328a4b8229527013f2ccb380b89c70e9015c2b4265420d40d0a3d02c53ad4eb809fb952c866d51082f37668986200964ebf145e66940cfea27f6f8be2b3b21a91c",
    "signer": "0x99BC47f474f4D0FAefEe74Cef22f21ACd7B9f957",
    "userId": "55349"
  }
}