{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "193291",
    "entityType": "User",
    "nonce": "0x3b7400bdced8765d177424205b6b5804550688e09ae03e1a2c43096659e1fee8",
    "signature": "0x4bb99bb61b482c2f0777300eb43b29276243e056da6b9475e19f1c6b13cf3bec2f58084ffb1b36e8675f61a2fc8b88838bf30ac6bb51dc7e8ca736fd025caa3f1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}