{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1777978",
    "entityType": "User",
    "nonce": "0x1c49366a398c2d645e9bd4ba44aa9ce8257b606fd8867185a7e277d066d75dbd",
    "signature": "0xbedd7ebdfdb6d6360210879e95244dc8dba37b3260b90f2e5bd5ffdd375ce01c3a99cd938ff99cfe52fab830319ed878da25c83ab0a80465210fe5a592b880ae1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}