{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53904",
    "entityType": "User",
    "nonce": "0xcf14975d8dc8a3f075f0a4e908a6696d32318a467a0ccc9edb1c6e1d8bfb7dbb",
    "signature": "0xa327f4f9a7f0065a200a6959986490b043f6444e51dac4d75985c96ecc4ef6d74bc617985516c96f6e40449f9b2eb1a28c80a86cd820c65c51bcec78fa3417941c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}