{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "13891",
    "entityType": "User",
    "nonce": "0x78b97a4fdce626ed57b0231485e7d30454873f63b906eea1bf9aa58f381aefc9",
    "signature": "0x8142c68bbdd909665f01a46717b96e441cd60430fea2ba23355f87dd22edcf8f6d5c53fbb26c44c76d0aa601ae8731edcb032a82f6b97d6496efaf91bb93fd481b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}