{
  "manageEntity": {
    "action": "Create",
    "entityId": "523726861",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"A great crossover of Rock and israelian music!\",\"entity_id\":199177402}}",
    "nonce": "0x49927ff4438bbeea7784fae23baede0c79a12d3e6073183ae2bfd7cd5750ed60",
    "signature": "0x55d775ee6c656b4ee287cc968f9004feac4b53e5109e8e3f2e4c002c95f4eae962e0a5c8f750c4f9bc261aa83528db56dffa2b74a6a403a118d67aec25f3877f1c",
    "signer": "0xfE8b7901289A70702AC15CcB11911b872E54e80D",
    "userId": "540022120"
  }
}