{
  "manageEntity": {
    "action": "Update",
    "entityId": "812694829",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x1dc64c0fca395c6645364c77fd362b1217849a3fbfb9914a33e4761ba10e5734",
    "signature": "0x048d4a89495d956ccb9009bdb752a86e45946183122503ffb6a3ba1a83d8926020722af6c9fbe7fb9992dd3eb88edb0de1acd82fe636e4b54f42ac36d481c0cc1c",
    "signer": "0xDFA6637C4e5300e247ABc16F4F736c90176f31B7",
    "userId": "812694829"
  }
}