{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x502fce210d5edc8bccabc018b45b1450025fe2c399287ccaafc5ecafc9ec31de",
    "signature": "0x3cd333a671f69a5471314691446a904f3cdf1af8ebb08c6ef15ce2e3fb92554f3a3b18e49ddeef14e107d856bd7c729aa8c7b0a589370315fd5221bd46324b471b",
    "signer": "0x0327c1898eCaD00a338eE6C7741626B166Cb53A6",
    "userId": "374446684"
  }
}