{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "125425",
    "entityType": "User",
    "nonce": "0x7016be49fcc442f77a70eef7bb172ef3b1d06a3fd96d235bad1efd0828547e9b",
    "signature": "0xa06078eca446b2dc98a2cc304d2ca5f42afd99a3758ba6a980b0eb3232d6a3456dabfaa96537fe3b2b0a0987e5ecfa6ec7244b7f232ffab7a7ce6d505cee206c1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}