{
  "manageEntity": {
    "action": "Create",
    "entityId": "1196464965",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":258969316,\"entity_id\":1317111864,\"body\":\"Very hard \",\"comment_id\":1196464965,\"track_timestamp_s\":34,\"mentions\":[]}}",
    "nonce": "0x7540ad953e138ce506e09e0ad2a7bebe2d0966dbf2c7af7f85e605a03a75c33c",
    "signature": "0xa716faa4ce563d4907f5a47728df1892f865d4e7fd0ae45f5c6d8327029a789223f74f48478b6f7df49d68de5921402c848fbc1f4648a7d2bd0ea53177de1a701c",
    "signer": "0xae00ddaAC04b9A436E6509debd96F0736AB61283",
    "userId": "258969316"
  }
}