{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120328011",
    "entityType": "User",
    "nonce": "0x4b50375351f955dc05399be574960ba014a3ff32e9902cd70d4d6fde79a150b0",
    "signature": "0x8eac41710f5375584a08e22f4f3824ea872224356dcb84ae4ca4157625fdb91b40149df56437a3a8d2243f3310ee03590cb3fa9545e582ccafb3886b5c0429691c",
    "signer": "0x3B15C1247a5CC34F846b88f0E04B262f39b05C1e",
    "userId": "563285188"
  }
}