{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "219276",
    "entityType": "User",
    "nonce": "0x5756b83b58c2c66e586bdb2b2a146e6da79ed3cfe622ce927874feaeec0eb1f5",
    "signature": "0xc21eaabe475f26a7e5c70a320b57c427ef09c75dfec0c4d869f8cf0ca519377b0c786213a1fbfc737925f3bb95eda3db8a02477fe33229c3455bb460c1e13e4f1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}