{
  "manageEntity": {
    "action": "Create",
    "entityId": "696767182",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":120087188,\"entity_id\":724253343,\"body\":\"Good\",\"comment_id\":696767182,\"track_timestamp_s\":84,\"mentions\":[]}}",
    "nonce": "0x0c368abc2cf79a76e18a722160033cdc228aeef404909e200516189e4ed227f9",
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    "signer": "0x3C127E4E3748B678707AF9F74E5C825Bd669F49c",
    "userId": "120087188"
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}