{
  "manageEntity": {
    "action": "Create",
    "entityId": "1267529027",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Loooove!!\",\"entity_id\":566059595,\"track_timestamp_s\":47}}",
    "nonce": "0xd60c080ff9aa91640f84b9186ab5be3ed6c19db5fb088f1a1c3e13a355d8a0a1",
    "signature": "0x41a5fd20a9a4ffff0c6ece31d6376bc74f7d166b3254eaf158111d7eabcf8bfb1857a80a5f12d0937f540bfaaf38f387b01e87d39f546ea5136d14e7e8a4dd361c",
    "signer": "0x4e636627B2C38e64C8D3aF5889767393B4fE6C1A",
    "userId": "181"
  }
}