{
  "manageEntity": {
    "action": "Update",
    "entityId": "395219571",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierasu3s5myj3hijyzgp5eymcd4ih4k4twuvpq627uy7c6ry2b6zol2a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":470657016},{\"type\":\"playlist\",\"playlist_id\":154153683},{\"type\":\"playlist\",\"playlist_id\":1057674013}]}}}",
    "nonce": "0x30b2251555bd598c85f14419e6d3ae02df5832982eac09218a097b601983760c",
    "signature": "0x239c562f06a08526d11779fe31111dd6e43f12d24079a935daba50e63855198222cdca4b4c1c0679f761cd87b1f107b257680d9bc9b69acc609dcd7297d51b021c",
    "signer": "0xC1c390791Cd8584Bc0D056AdDe5c3D747aA694d3",
    "userId": "395219571"
  }
}