{
  "manageEntity": {
    "action": "Create",
    "entityId": "2106175010",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":52309,\"entity_id\":2131836560,\"body\":\"NICE!\",\"track_timestamp_s\":77}}",
    "nonce": "0xb1883abb3dfd856c47595999b15067dce752679ccdb45ae507570fef94675b11",
    "signature": "0x9ec67cbcc83b6ab3d0aafaebdec6c87b3d33bcc61f62c7609c7f3441b99135c2655b2a33ab7d4dbff736b1360e7b89a7861f6073413e883d68391d6092467e751c",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "52309"
  }
}