{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "374637",
    "entityType": "User",
    "nonce": "0xd376482520b11aea69d653fd9fba05c488940a05773432c506340fb0a4442bfb",
    "signature": "0x1c21c65a0ee50b0b1e92d0cee02dfd6dc3da54b0bc0c5d1607229af52b72e1264a4401ff82b3ce93477df305d65c528fd4fffe1a0f27ae3190e6e05de448ed281b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}