{
  "manageEntity": {
    "action": "Update",
    "entityId": "664129502",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieragychpgj6ne5q7qjhbx5i5sf27enzwgcadxniarv3qnhjwnw4tcjq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1966700766},{\"type\":\"playlist\",\"playlist_id\":2137411357}]}}}",
    "nonce": "0xa04d72589a71407b199e67869116a636bf61af32008f470b13ba75dacf8520e0",
    "signature": "0x26b961f427525e40c57e0b86e05201a5026f9f77bb9c379f99f0743a2ed020af51121aefcd8dfb51de75e1a53dd681d3e4a43cb59eab48cb6f863e0275e80b941c",
    "signer": "0x97C0F2400420716C8E51fC299bAB6e9Bd2d337cc",
    "userId": "664129502"
  }
}