{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "688478140",
    "entityType": "User",
    "nonce": "0xbb5bedd661b9030ed3ac18ed5a77b6c8910438705247adee16f46da2b3e012f9",
    "signature": "0x52fd2be57e2bd52e885a4a94f4ee90a4126934fb8ed95ba3ba19b4322ccf1f86253403c42f24881e5b69860835bf28cd456e63c1d4cd7c2c44b7411e01d4c9bc1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}