{
  "manageEntity": {
    "action": "Create",
    "entityId": "815529830",
    "entityType": "Comment",
    "metadata": "{\"cid\":\"\",\"data\":{\"entity_type\":\"Track\",\"body\":\"Hello\",\"entity_id\":2064268915}}",
    "nonce": "0xbd6cc6c3d833b20c965f520ea024183d6707810c75458d92ef3cdf3b0e672c59",
    "signature": "0x0b50bf3f2311f95a61c1f90ef7463eb1b20814d1d80499f17b186c3652cb3ef6440e61fb0cf32dfec81504c84e0449b0fef391ca76a3463374574981cea128151b",
    "signer": "0x9981707E90f9BCeE948E5eA5409A4D1b982c3AF4",
    "userId": "400587006"
  }
}