{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "451684863",
    "entityType": "User",
    "nonce": "0x64168aeb10d2fe31018d48d5279853bdd210daad1014d5f139dab82925ad7905",
    "signature": "0x14d8b48a1fcd1b49aa2386af3dcfa13e91445b6b34c1c9d4b0f1085c2579e8c421a585340431a7014b443aa3b3afb0443aed1c0e365aaab41a007c48ba268f781b",
    "signer": "0x6818B889bFEAe14D2ADdaC4dBF0eAe75779d7Ac4",
    "userId": "341292657"
  }
}