{
  "manageEntity": {
    "action": "Update",
    "entityId": "137744695",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieracml5zhz2ewxyi55uevqzvkmtmy2u4q2lzajagsomshhafhqvpuna\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1356007076},{\"type\":\"playlist\",\"playlist_id\":712092038},{\"type\":\"playlist\",\"playlist_id\":1975221590}]}}}",
    "nonce": "0x54bedcedb0ae1ccb01f6c74b3f4f2d7237d7a07d5972cdbcdd7babc2afd338e6",
    "signature": "0x923997a3d29969a3cda95e5ceba619981a24b004b41f71acaef4d519536694ac1f4554faf1b532990a04c61b35843138a28f886701d576f84707209cd02e4f661b",
    "signer": "0x997892Ba3dA104CdcAb8b169555d48E2884F6eC3",
    "userId": "137744695"
  }
}