{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "754442",
    "entityType": "User",
    "nonce": "0x9f6645a90705d2258399e9ed2890b41853e9b80abc2fe643d6e99a2e623c7c6d",
    "signature": "0x88d349594f0918b1daa31284da37273835db028b7027421a4f9cf6291e8e95927e423d43982b2e47745edf7e335ae99133c552a9218f7d27230ab68c10d9674f1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}