{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "319751",
    "entityType": "User",
    "nonce": "0x31fac79866d8533e8bfa0d4660a991627a45184f0a1aa0d14c818babf354f7a8",
    "signature": "0x742327a347334b477bc0f3a7b58213d4ae5b86e2666324c04e02dd93733219e84a3fa78aadca9a8351ddc8896fa4690911aefca298d827f779f062a07dc9f4591b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}