{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x00e7dca9b3c3e73ea1dd0c1f3c6b08a1e932dfc773aaf713da9ce23ad30914bb",
    "signature": "0x5df8118ae7d0e34bb9a42a8ec40e6892a4c3340d66b465f88d17f697bef38b333abf95f4434d149e4d56ad37db6798a5c52468e5f1915d6e53f60a490fbb81e01b",
    "signer": "0x594FDf069B8F803eE20CE92c1509071088CfBC77",
    "userId": "376200150"
  }
}