{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "755820",
    "entityType": "User",
    "nonce": "0x184369cbbc9911aa888377302281ed6cd029f9a34437a578a9e7fad1e6a9ec7f",
    "signature": "0xec5da206d9373621a11cea35b6a0e0b7888e5e4b50c09a419ecdad33f58ee94f3fad2d96b116f20488e7b725bb5e272623f60177a7b7a232fd21b99c7289c6411b",
    "signer": "0x56e1A1DA7e462EAb52B3A45f6605f1bbfe0D1858",
    "userId": "301637"
  }
}