{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "150631",
    "entityType": "User",
    "nonce": "0xc6af4bbe6886ecacc51a5571d13809e297b1c1dbda4184d08cc2f7ef91a8952e",
    "signature": "0xa868ed1410b12ec5ffc903dfd4ede0510a92154f753e0f5f03df19c58a44fdb679dd2ce9d43c18ddea0ee1769bb0d3bb9be367b6d841846b7a004356d9b62f031b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}