{
  "manageEntity": {
    "action": "Create",
    "entityId": "1121919646",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"hands upppp\",\"entity_id\":24419040,\"track_timestamp_s\":49}}",
    "nonce": "0xcdfe6a49856fabedb7c00fb9da4e84efd6fab5a9cd886dd062e77c3a9728f7b4",
    "signature": "0xd9862062665dd8a540213cad780feda6afd653fb2fccfec7b229382b05c7fdf55e4c311826bdc7c5a75efdbb11168d2ee46d8d528886740940cf8944a6e017e91c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}