{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x87c65d138f86c0859af5b661469da3c6d82ba8727a1315d5147a60bbd0cff2b1",
    "signature": "0x3dc136ae1762da2db157eb39b4d3758998cbe4c9663a9702cfb3a8f98f6af3c93c6d4b161c16af9447a6c198203173f69704cd614e83ffc7f9b20df4e6d7ecd21b",
    "signer": "0x64281812401315DBBa8F02626AA43A7B14d9ceEF",
    "userId": "13984047"
  }
}