{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "751962",
    "entityType": "User",
    "nonce": "0x6810ea739827d3c8aa6e4a0c7c328eec1e7e541545a21303f7b97e18cca84fd4",
    "signature": "0x0fd916c1846f9998962f9229655889cfee068ff2cd172eddae28185131a724f46f572b0d62497935df1ae5550ac0522b066391dbeb8571cd1715395dc1ba12b71c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}