{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "970719",
    "entityType": "User",
    "nonce": "0xc3c03f2355dae5777a29dcb1cb61b2059744f36fa63eb72f5091fb8ead96561c",
    "signature": "0xe515afaf71e3ea5569eb1d75ed9b4cef0f2264473ed0087f3821e3e26191ddd418ea3d620c62dc2256e2c86d6bf7cdcdcef4fc620d706451efdef6492139202b1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}