{
  "manageEntity": {
    "action": "Update",
    "entityId": "539020337",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7qyja6v6jk544qxuauzizbpmnccd5ty6x544kekbpja36tpvpn7q\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":366802839},{\"type\":\"playlist\",\"playlist_id\":1297150839}]}}}",
    "nonce": "0x67b550e8a8ff3f5d1dc051b6d34a2d557523e221521f1984c7065585499af1e8",
    "signature": "0xe33f621c1e6e3881f1567ced2e5ba362495b217e96e92c512a1e243d47ce386e7d31fdab69427a9ffc19a519c0634f7c4d0025a8ab0676ec10e6bfe3ecb506151c",
    "signer": "0xB0A52EC29a91B6D9D3A4845CD4CcdcE0321CEF1C",
    "userId": "539020337"
  }
}