{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "560821607",
    "entityType": "User",
    "nonce": "0xf90e437bada284c9f1c74a20afafd2087c2f7fda61a8f63e1a1b1ddbcda82103",
    "signature": "0x98f282f672e5266caa6fc85dbb7053c880010664c8a394d2799e5506851767ce25f0a1e57ca15e42d0a910fb79b8d8badae097127f0eb6112e31ee335612ea651b",
    "signer": "0x23Ba22AD3B91EdadE1Fb5ab3727E3926E8c489bC",
    "userId": "153215616"
  }
}