{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "871324932",
    "entityType": "User",
    "nonce": "0xe7b071aeb0cd8d9c8c82499187a2b4635a12669c9850d238691e6467b8e21ec1",
    "signature": "0x1b4659c862e5fa21a9d58d125571e55cf75ed1f32df2f3cbc909f3d1e78119395bd43dd56192677ff222e3b0af6fd871f8bbaac5c0b114f9e35b7d454fea58961c",
    "signer": "0x4f4C18220D065b5195F09E23993B70Faa751F0C0",
    "userId": "583021207"
  }
}