{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2dab20fa76c5e3ea9ff6be2e43b3605af99b61bb833516d47cbcc34a08e5da94",
    "signature": "0x1be1f7a2327434ced73fb139fc4b8e4ec616e76a3ff88be880ece7b094bf202f003bce53f4610b953a35e0b09b9156a5f47da59baab6ef7f9a29b7b28469dd521b",
    "signer": "0xA554E683CA944a67e859cC4239b0d31316646a65",
    "userId": "628502085"
  }
}