{
  "manageEntity": {
    "action": "Create",
    "entityId": "42876423",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"@Brozrdz LFG!!\",\"entity_id\":1854944736,\"mentions\":[105826],\"parent_id\":920399932,\"parent_comment_id\":920399932,\"track_timestamp_s\":16}}",
    "nonce": "0xc99fd0b9138a5d2a905a03a8e9de27156d450b1d85d699cf0c932543bd696d4b",
    "signature": "0x7c48aae8ed8044de19a1b177fd6f5f72a7a5741ddaa79771d61bf67c33ae2c8d7e6cc14ab29129e05eddac4582c6a8866ad9a56d8997af2ca3317f99f15177ab1c",
    "signer": "0x50b783F261051318f80C7C52d4b1275FBC870a4B",
    "userId": "755263"
  }
}