{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305916",
    "entityType": "User",
    "nonce": "0x2f212ca7b092164268fcdda6fe27ae68958f45c481076e8dd49b7b847a8ed7d5",
    "signature": "0x8ced2ee5af4928939940c247a031ef77dcd238d619bbd6fb91b00ebbd9d86dd023775b0336f7595e7b8c4bfee541e7dcdfb1b54ce92556dfb7d2df2692c4ceaa1c",
    "signer": "0x040629E31a68119093b9a0111257C8449c2f8e10",
    "userId": "20"
  }
}