{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x902509a90a1a190f7374a98468247084f0b14e7532e70e2a7e57944bf215e021",
    "signature": "0x2a54bc0b05a9846a5f9f7d36755ddef7f8946600e49c01c609126409ff32998919eecfc5dcc3a20a1ba7bd5ebdcb3e44ac0b99ce9cc3537c104bf3137135848a1c",
    "signer": "0xC75a276D0a36850045510B0483E737bCDd1F5E9b",
    "userId": "588125677"
  }
}