{
  "manageEntity": {
    "action": "Create",
    "entityId": "1978095298",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Fire!\",\"entity_id\":556243774,\"track_timestamp_s\":51}}",
    "nonce": "0x0afc09411b5fd82093ee6f32792c5c68a64b1c5196e21193825cc8ecaf36bde1",
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}