{
  "manageEntity": {
    "action": "Create",
    "entityId": "534154422",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Nice\",\"entity_id\":1356404348,\"track_timestamp_s\":230}}",
    "nonce": "0x36f2b0fb645195d8c0dc787b5879d6b8dcd856952c9e7ffaa7ecf7fe27d6ef99",
    "signature": "0xb8cd091f84590ec009637c016e7a966ff2e600b8b6cf4591f7c73f34160596080c0e9bd063da74c97ecdd3f9e040fdedde9e13c94e056ded5cd9089e900f64b91c",
    "signer": "0x7Fa5a67C00c48DCA54f12c80579B583FcD79a330",
    "userId": "527480232"
  }
}