{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "713649918",
    "entityType": "User",
    "nonce": "0x473b7b1950ee20423d7fc9ada30cba9d3b62f234b444b24135a0323bb285469f",
    "signature": "0xb9e1e8a5e098cc60d77c5442ce58978adfe7bac143d762c1c9a8b4130c0d6ed3250873c6e0feb1e45e875ad5172f5bcf293d7cac6f1adda0ec9b1b53a6b5f9fd1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}