{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb1704d345913969d58070e9fc56522756efa05fb3dcb3be87ffaa2d166acc871",
    "signature": "0xdee34c016fe766e78b2056138cdbd45eaa60c0416729b93eca279b056d4cce3b6db22b8e8c55f62dac3dad6778497f9f47e06f2171bf426f0219a5f0853b79cb1b",
    "signer": "0x1CDFC7DebeB27ACec9283A3Aaf4D478733710AF3",
    "userId": "304121833"
  }
}