{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "45550",
    "entityType": "User",
    "nonce": "0x368a047a19fcdfe6ad2e753186fc202686bcbdaa6cb79efa634437d69617be3c",
    "signature": "0x5895e5c6d1e33a09ea9234bbe7bf16b0b2509c6d41f0bb2a09102bdb0c39b3cf1212c97de1d7c6207a45365937ef30a0118d3185e8d1ae68c21bbda0a4b795e71b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}