{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6c746777c5908f932274772537a3079fecaeaac2bab70314c0146a8842378194",
    "signature": "0x7108414bd2f333ebcdd68d54aeaaea01a9b6de6776c7736217b14df56ddcf1353b9faac7c9d271fda7853650f8940ff4118d0d633bba22d37b649a8cb47271781b",
    "signer": "0xA4a4202f6cFb9e803accE4dD55Df0371d457F2d4",
    "userId": "587565125"
  }
}