{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "240258423",
    "entityType": "User",
    "nonce": "0xe417035cee02443c5308900142dfb1be9ff5b3c1de56e6f8687f64b5aa43c8da",
    "signature": "0xeb5d4c2faae7ee149c9bebea4b1742fb125f846932c69247a085e22d1f3964041c64e0817a638463b3fc045b4c08a7711cc3ae71e1989687ae7cd024c12623c01b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}