{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43249",
    "entityType": "User",
    "nonce": "0x2f104cf6fd2af6ee4470d76391fffe2730f6e15d15753739efabe9600d9a28d9",
    "signature": "0x497fbc13e473e4424c74f10cde05d64e7fdde6905517b052e6c7cd0680ae7ab501cdad7ae213528af67e10b9c06e571caaca01ad735ce93f81bb3ff865d3653d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}