{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x843fb1790f2dbbf0b9be44ac5ca54a247943972d0044b2de2f97598608e29bc3",
    "signature": "0x42b50c18993f56a2ba5ff273140330551d435e66ad846ff13bbb7ea361079154659c679424a4a7a8abd576d838eb555b2545268c1224f63613e7c9585b7b7de41b",
    "signer": "0x630980A3A6b695C7099AD6f4D467D393A76106Ff",
    "userId": "315465903"
  }
}