{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299279",
    "entityType": "User",
    "nonce": "0x0d623be6d4364bb0ed264fb57f536e2c50ab8ba5d408cec61be0d477ad3ceb98",
    "signature": "0x8eb717d97a5c59605a040b4c9bf97c0a2e7b408cabf369be205bb0120ea8a9810e10a6a75d768e162862587df2bf0defa03b1ba7ecc548db215c85abe0b76df61b",
    "signer": "0x243f92B83d056f818b9b95664A8B7A86805A3E71",
    "userId": "111448"
  }
}