{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0f5c19587d2b8ab45a52e6d6052040c55c7373651aa741a4584afff9b119ac1d",
    "signature": "0x560473c30cf9e43849e6d4921618a017cddf4480aae44659971163e1eae545c466d6339fed22bfa4876dd2ceedd060ad1867ebfaff32281dab15c0b78ab6f3eb1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}