{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257534016",
    "entityType": "User",
    "nonce": "0x7df9f8e68c42ed1b36b3215c950e5b829415d538e9c6693764ff270b3b244d45",
    "signature": "0x78b82e8f9ffa2c140cc458aa8478def00ccae54dcdbc2f88ca612031dad7a8fc370774c3b019c9037511c8f9464919d2fc4b64c1288cfd9388302274fb8c8ed61c",
    "signer": "0xDDCce44d487ED1f7297d836241df35AAB6D867b0",
    "userId": "22610281"
  }
}