{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2673",
    "entityType": "User",
    "nonce": "0xb51e6ef38ff67df21ee372ac65a8fa64a46b7a9ee847e6c44b252d9aed426a87",
    "signature": "0xf46b4dcd47b25d9ada6d5fcdd04a8970d015805eb8ed3974214b6ccc3aa132c71ddf6eae08d515baa89ea9510c23c08a7bf6fc8d0cdf6c40f0224f2d1e00dc891c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}