{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "78123",
    "entityType": "User",
    "nonce": "0x44064c9efca8bce588fd07d6cb9df3b6048c3001706bde034c558eb7ee3f3970",
    "signature": "0x24abbce023ccee56af04cfa2e0247b464efecd3678a04a14e5778ffbfa7adea420bbcbd2a483f2e044214d5027c6c1afba38021bc76e5e71e14a8a59c37ae8481c",
    "signer": "0x57Ad6E2E3fFc5ABe9b5FE7DC3bF7c07c8cCf9Ccf",
    "userId": "571702334"
  }
}