{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2194",
    "entityType": "User",
    "nonce": "0x2a8b2990d8f9af3505e03ff9173ca9043460ce5e318aa216632a77697f583c2f",
    "signature": "0xdfb8a6da3de6fcbabcd38f5e462a3fd25c9fe09a778ad65e0796b70e554ae0ff5d32d16b38d026bc53894af6f57165241f225fe633daeb3e5c0d66eb6a6588e31c",
    "signer": "0x2A25841877cdB566b098A5579fe0ebC0AE53bB10",
    "userId": "211917910"
  }
}