{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "844131",
    "entityType": "User",
    "nonce": "0xdd2ce55f468a16e65802f07272281c4e3c61bc2bbe0c7408a91394af2772ba0a",
    "signature": "0x69be88b5909327458856ffd2d04c4e50efdcf31da524398b87fa5c65d350e0d031b109f3fccc002c5eb0cb75b37956a04fdb92aa898a494a6fc0bc7aaa6e3c301c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}