{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "348153",
    "entityType": "User",
    "nonce": "0x3fbd0e57b44c8481015b92c511baacc00ada27e5050b2ab21c8c3048fc2eb227",
    "signature": "0x51021162cffc21c26bd3c61d0f9d9a914e2af5902b448d75481cdce4a441d4740b93fea43c36c7b26462adf85a6bb96a8fbd370fd12db57d3be0779f104341081c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}