{
  "manageEntity": {
    "action": "Update",
    "entityId": "12199196",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xdb0bed3c35ba5fe620e66b5e851cc473617c4ef0a252417e5d5265c165142003",
    "signature": "0xbf2134eb5f623293ba851f97899d0b8002381935a2843197f97a4816b94bc94b47c949728aba380062d868157526e6d5a7319566f27759504537313828f942251b",
    "signer": "0x32434E0b41660Db9fA4e47F6077466388a46920f",
    "userId": "12199196"
  }
}