{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf90c2d0786c26710f60328dba9cf4794504e1dbb65286f735736581e46dc5695",
    "signature": "0xafd7ebeecfe96d2f6320dfa1d082aef31d52b593cafb491f124d4a4cfb97a1601782bdc1691eae95d0e3bab5bf4f4438217071ac8e0c73bcd6700c2673f27b8b1b",
    "signer": "0x2A7605b91fFB317Bc4CCaa145120a20f7ED40f9b",
    "userId": "693659852"
  }
}