{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0bc5cbaf902322e92a837d5aff591dc82e1dcb11db1308989b846d867a40de2c",
    "signature": "0x26b7efbd8306333cdec3aa2ca93507cdf50d2feecb623e189f2de556c967d20e01c99639d0fea096f486f4ed3d0d975119559d283870b1f69d222e1904694e601b",
    "signer": "0x50D045bfD0f16c9717545Bc037b61Be044c75B96",
    "userId": "282242162"
  }
}