{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "983547790",
    "entityType": "User",
    "nonce": "0x77e854f0057b55c6851cf3886e95546ec90f20e53390e40c4a2d08d2b4b1e828",
    "signature": "0x8cc2060c8a1952326e481ba1e1bb2fcf3ac501608ae474e3f2b29470f7f7775031f084ca1335a833d38141f3759de84231d1e999f1f226da754669d59ba8edac1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}