{
  "manageEntity": {
    "action": "Create",
    "entityId": "52117543",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"user_id\":20,\"entity_id\":2051885660,\"body\":\"love it\",\"track_timestamp_s\":131}}",
    "nonce": "0x49fc474f40ce9bcdaed969d30ce544eb47e03c78460acc09ccdc4e95bc567c41",
    "signature": "0x7f5e633bae3a7703e35140a2eb2efcac0021bb95b37bc37bcedd5fd506715754091cec48bf9890d068c19220eb6485db6e55db2bc6d26d019b089f010ff1f17c1b",
    "signer": "0x1CE93c43F8574f553E8071e946654066188B61BC",
    "userId": "20"
  }
}