{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "81620",
    "entityType": "User",
    "nonce": "0x5c6ca151adabc05315ea1d26b17ee5fff3b3d6fd79c9ab3b1d0982b1016bed68",
    "signature": "0x471e2fd3b1589869a1ae16eb2f996fd1a2644afaf41934e7b624f4f6af27808a375366da7c85d0dbb84986c5d27dabd4dd705560ad0028bcda5a5abc154d28cd1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}