{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540529323",
    "entityType": "User",
    "nonce": "0x8554ee9f318c138b4d26b396e91e48ab44fb7bd97934aa1098a79231aa960e20",
    "signature": "0x3f1fe5403c7721a415367a57abad37624c82a969bd5a94cc4bd26754379f31301ffcdf89b693ce9dc591d1dff2d2d9af1cff163e80facdf0edc43727d152dc791b",
    "signer": "0x59765b22C96E88dA578af23E8611d6ca2dcCd7C9",
    "userId": "377610060"
  }
}