{
  "manageEntity": {
    "action": "Create",
    "entityId": "530391336",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Sound so old school! Great work! \",\"entity_id\":1757008179,\"track_timestamp_s\":37}}",
    "nonce": "0x7dcf28d31f9d82ea54d5d0ff5a40831cfbc959015bb526f13a13060b43cd6e9d",
    "signature": "0x523d1ebf75a3face6a0d083a168834bf593aceac1ea050b8f9019a1a9067dce600dd5d53f2a258484da8607697277021e72d3aee854ee456effe547ba49b2dba1b",
    "signer": "0x37C656432bDD87630C13F60036e9857B5ee36154",
    "userId": "288167767"
  }
}