{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0xb3d64dcb1b40fb63012bf3da523cfbb9ac4233968e97faae33e5d41e80a84f1c",
    "signature": "0xee1144090487ff1e690ae070d9976a8488d16b3f0e91e7a4a093bdd46f90938a2db6f9749ed80d4d131ce4f0a551131306674e127c3e057b38a4f78d991f15811b",
    "signer": "0xaaDaEE16C1277E756941765BaFa8aC22C1e6dfb8",
    "userId": "747608505"
  }
}