{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43431",
    "entityType": "User",
    "nonce": "0xdfa177aa82598a320a27275e0ee40f0f4dda05c5c7e4b059ec0cc8a79638bdfb",
    "signature": "0x5b04eff315c14eb6de55bfab4d7a9dfe07c7a87d030da8c0febd7925716ab74a00aa959429dbd1a0cd097bc2f5b521ceda820df3a728cfb6479d73ae981017141b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}