{
  "manageEntity": {
    "action": "Create",
    "entityId": "129975306",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"@phuture Thank you ;)\",\"entity_id\":1682990839,\"mentions\":[20],\"parent_id\":935709602,\"parent_comment_id\":935709602}}",
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}