{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0x44b3f8a14a0b358366ad1085715150ade592023a54ff8a178d7163750e23ff55",
    "signature": "0x33d940784264652f7829adfd6a11647b456074352a0cb772064fd18189ce2017724e6d7b1b543d0a16f259f0cb8b2bef7783338551339d38ddea5e665ff960a01c",
    "signer": "0xfb10f4049c6f3AD197aC1e2367766B3cC9f74651",
    "userId": "532349201"
  }
}