{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3959",
    "entityType": "User",
    "nonce": "0x5a95f7e4b98e037f8a915cb78cb4d7b50b415b874bcf81d87ad0a3b5ffc54aaf",
    "signature": "0x9c1f7f689e7f3c1cd206fa6de5981286b1a8290f84f76b02f59b028688119df81b0d8c2e39f9a4bae3fb7dfd7dbf87e4e05536f894f17b7926c1e5082cbef2c71c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}