{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3fc4f7d313008ed8925b9a7ce07d44e02f95fd6610a97fa3e346a731d5ff998a",
    "signature": "0x2be9577d464ac66c86497abe62e67237511f327d7956fb12ea22d5f8505e56ef5dd77b89a07bceddd54bbd348ec8c2b2c1523e81fdf50b88b153e6df8e5bc02d1c",
    "signer": "0x868fBE47A2e8DaF8a0cfC2bD40DAd185C0c7A400",
    "userId": "716529514"
  }
}