{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6f01c719e49490fa7a33f24ad022e68eb89673f1029ef1be7394676daa057c79",
    "signature": "0xb48583a023ffd69540b2f0d769998fadaada11c358c4274be002903b5c464c417f50cd943aa39dd76948d9cd131bbe3a9dcb3ea15885cb4c75c03663f63028861c",
    "signer": "0x513Da7C15E382bBF2D0ae0369EE42D08FED44520",
    "userId": "546870825"
  }
}