{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1873428",
    "entityType": "User",
    "nonce": "0x4f78b65b88a70c953459763334bcce5f01191d5106c2902b6ad999f2f62a7d73",
    "signature": "0xc04dde935aa6200f64a48d41ab302a1cc63cf6c3736144461f4719d954aea7cb16b8d0df501460a99ef156f56b04e162442e0fff50de5184d30570c1faa567ae1b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}