{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "306102391",
    "entityType": "User",
    "nonce": "0xe2c011a4accbf67b0136ac16b3e9e15301bf43733eb61b3f8599f504436c0e36",
    "signature": "0xcf29e38be56609b55b9fcb09ccd588790a5dad0ce6bccd76082c650de70a2f781c271f0de3dec33d2e1748a9e7a291b06de0f02f97d1d265a7edc647ca4e2f871c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}