{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1963812",
    "entityType": "User",
    "nonce": "0xc9cde9202e348c64c1f734c4e750717b7ff6f920b22f0852dfe6751f30a11e0e",
    "signature": "0xf2bca87be27ea41fc1941e27cc0670b185f21e63c3e25833b447801b28fa472246f0697ddaa8575f6691b696afd19214e0dc26b9bf1c690dfbce8505ad63a7561c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}