{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "885900244",
    "entityType": "User",
    "nonce": "0xef0e574a7616fc0c7586654a5f90526676a93de751f92f89e2b5f31124a2fd88",
    "signature": "0xfbc09a960dc30aca0986a17502c8fc063d084bbe156ef35f266f00641e93d5762060fca0b91d032d9b561189300d3f3f4c559f8203d6634d92ad17a79c5a67f01c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}