{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580720856",
    "entityType": "User",
    "nonce": "0x3ca2a221ec6ee92c2a35c2196c84e42033e02ebaa46b43677a916d1c0bdf88ad",
    "signature": "0x30ad2323ad4a5f7723c5293072ec9a5eb89f8155b9f96916c7115219afb03c55589ab137740cb2ccfaf6edcb037b333d22f593892ec8f20575d711dea83325491c",
    "signer": "0x45dAf7d8C91b01b2F5E651081b5910a6b272928D",
    "userId": "819927783"
  }
}