{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "440887",
    "entityType": "User",
    "nonce": "0xc894b199de9e42b84322bc1d5bfea0a56cfa23f6407cee61aaf34cae59c2860f",
    "signature": "0x33c9767b9107ca553c85fc0583b376a0e25ff7cf932e7ebaf4fc274513604fe54ed8a9a4affa011e1ec9f68ad1e2c12a8d669c23ea25ccd95d372dcb646af7561c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}