{
  "manageEntity": {
    "action": "Update",
    "entityId": "864415180",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaierazju3tenpbi4am7i3yqfa7k3hl2ianen7kpgn6jvqqn4phkhdbxnq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":952230389},{\"type\":\"playlist\",\"playlist_id\":65041596}]}}}",
    "nonce": "0x1ac1213c14aacb7616a0445caec695ebbd5914d83f56d1e6fefa2a17a229294b",
    "signature": "0x6fa3bbc50dc2543466264da08dc0f608d47d3748995646140536fec897d029065feac49658f4a0416818f4d4012704004d29c147e7fabac44ad9987c29d606ac1b",
    "signer": "0xEC824E21C14866Abe3921DDAb0968fAa7FFa23a1",
    "userId": "864415180"
  }
}