{
  "manageEntity": {
    "action": "Update",
    "entityId": "529159730",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xe642dfe94511ebc7b5dede13dedc6a974edee701317b2fa48c429336ac678b49",
    "signature": "0x444a9302f22353650833afab5021fc15bb3d0e7b97d7e02a9b3366f08e4a37cb4e0fc19bce0271608c1b1e9ff3da0d4ad97febc093087406b7a2b2dc2c0cc09a1c",
    "signer": "0x0C1B5A9Bf06f9aefe484d2535e9585D6b6960C70",
    "userId": "529159730"
  }
}