{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc810a59b46a2b7233dd6a05493c5fbbf7d04b553d0936fc7939655527ab7bbe7",
    "signature": "0x04bdf6f3663f7eaadf307c184c06944e61ef94f41a75e22e5daa6de57ab0f83a1283879d53d94f6ff10fba118e15a8d30477723d25d7066847707e3ca337060a1b",
    "signer": "0x1B472257fde1F020c548DEbC6db2269deE9ee687",
    "userId": "53171388"
  }
}