{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120001",
    "entityType": "User",
    "nonce": "0xb7b58d3521e764661928f4387bc468cf1db38a7bfc9c144011f1aca5ceb51e03",
    "signature": "0x2a90418eb105071c605155d8d5a5067348f3e6f3e16a1402a735f6ff9b5d47fc015d0b1f8a4614991e1a6d29aa00cc747820c635aa69684dc62560422b2b80591b",
    "signer": "0xC35123bF05ca0B3A7B333c53E47bcd9f9DA864d4",
    "userId": "33896318"
  }
}