{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "249889",
    "entityType": "User",
    "nonce": "0x0c579a9e45d692f8259e45fafb2e7184384705dec4c17ebb722157c20a8b1915",
    "signature": "0x77fab522325cc0dabec497cc461a39d8b771ac42eb7b10032d532ea2a6db6f3e75581a1055c911583ff869600f5a4e9879ecedcacb4719bcb43bddc7d534d2d21c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}