{
  "manageEntity": {
    "action": "Update",
    "entityId": "552726984",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xa9c301de6fe71696b7a72f243e04ee72a9cfc5dc0d0207941f16a630fc7e0171",
    "signature": "0x30eeff1461eebbf78c612f5ebeee6cd9c5636eee204f78b3268095ce079522564bb1668708f363a49f5a848a837d6e4109a67331ca8f422846e2bfa950287b3b1c",
    "signer": "0xd3d8c91870B94c11c799E606f806B055F5703c7c",
    "userId": "552726984"
  }
}