{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0b241f1e5b85a2fd94f011979c8a88adb8a37a0bb3348fd05c29784cdb0c695b",
    "signature": "0xc7635735503538b23118431198859e0b7ca1f6181cf4af8b009c960690488978777dc951272e2f0655473b4de06f18b3a942699747c8401c718d2b6440e08e661c",
    "signer": "0x974eA4a70C4984B02Bc389BAfEa12383bCBb2c0f",
    "userId": "251441680"
  }
}