{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf54412d95a9708e805a02a80f880ab9027b34b101daf98179d324832f539ba36",
    "signature": "0xfedfeea4f01de4851c4de9364ea2896efd0fa7ecf7ffeb28e2bf256fb37e6af74cec42a4d7bc85de9e71d1a88b9056b207484aa0b0af841007e1381b236dde7b1b",
    "signer": "0x0bD40F3b618d9Bdc603481CCF92f6C73f69D7B50",
    "userId": "63913739"
  }
}