{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "494113495",
    "entityType": "User",
    "nonce": "0x981be9d9dac4d68d9cf2edecb0361b5720b389d13705565120d71b0d0c4375cf",
    "signature": "0xeb3f984060c6cafce9481a20e46f175224ff138608340a729005d2ebbb3d86692cf6e10c0795883cd6dd7efc4282c2a104e131f6032341785a5bc4a790ee47631c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}