{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe3835e8f5a1d933398fd5485f6e1e5ecfa52446126f892e8b035f77b56a7fb56",
    "signature": "0xe0f8cfd992f405a643b71f81cebc66d81c01a9bd6e9156aee3dd9a8d0d8de42104f9d85e3561beaed5be70c99bb2fb0ee2de5a6f938a8696dfa7c21f1f7491441b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}