{
  "manageEntity": {
    "action": "Update",
    "entityId": "54946407",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x538ac8fada1939cebf503e932f232cd3be2701c82564cb03fc90ab87b1d88408",
    "signature": "0x9332c070139a74735d2ab75b94409fe4ee77ae6da55c2ca2470da4c2398e5de67943e4eb64b578825117f7846a44faa22a785464e7796defbe2935b2d8e43ec31b",
    "signer": "0x4BbBDc4BC62218882F8f12d09E5F4C84300962bC",
    "userId": "54946407"
  }
}