{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "338730",
    "entityType": "User",
    "nonce": "0xfdf78d34a575122c25a800b1efe83767c4deaa4c6fd2fa228f4f9d833dcab9c9",
    "signature": "0x4523bc875ee7691caf2f5430c77fb2cb77d9aea46600090229ea3fe6a00f00b41add64f20c12b36cc5a7fb739b61a9ecebedee7a56dafd2babea56d2bde5164a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}