{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "441533",
    "entityType": "User",
    "nonce": "0x0fc02851dd0a6e77c06e6bf07e953d8e8dfdc6434c997c72cdecc8a10ee84fcc",
    "signature": "0xe4d19c72228f6fe544011223317b2a7d6b65665787cd7a52be01dec01b72b0f96714b2c28bf8b119e189d97b3c9f452e0cb58bb8f97064412ddf36e63848bb6f1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}