{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "157053",
    "entityType": "User",
    "nonce": "0xc0f951cbb4e3c33e99187db6d83d0d4d2bb3a1f22de22ea0f57de0e5e3f698c4",
    "signature": "0xc934cf5e9c88386a7e048e8d0ee1c4f4f6d11f212ecd1fe7b7c669efdb9faa050e82bc6323a982e6af675a99ddcf16fdccaba056dbff79272fd3ab05cd5721231b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}