{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "341470",
    "entityType": "User",
    "nonce": "0x3771efab57ffacd909413e6ddf56f20626c0f1a115b38de087ae6e1c7e6e7dde",
    "signature": "0xe615adb194539a1ff26fdeffd8b1cd4d9fcab4b35dffb289575ccdc5178acbda7b22eff2ea02e370cda5ca10e9adf97c37608b9b605b0bbf3fde771c4611cc981b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}