{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "328337",
    "entityType": "User",
    "nonce": "0x386c511913fa94e8b6c2f152f33e3932a5bc501cf33b8c3f010701856998e737",
    "signature": "0x5748adce59ecdfcd36cb577eca58e0a789933ba9c47572ad6b9f35dd139cd41c3565602ce9b72a2ac3747147d856110a94911003c82558887fed63e78e5318b31b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}