{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "689259710",
    "entityType": "User",
    "nonce": "0x263ba012768fc9819c83cde5e8cee5151895f7b7070da67a640098e24e31ea9a",
    "signature": "0xe85ee28e1dd9112eacd54ec400e8c4aedf5cc56c1c3d6a7deaa9f5e7042fe1ea3a0ad505f3165062858e227d91c49f92206ad4333f2e419783adcad0b6ba8e7c1b",
    "signer": "0x48FD75f1b7D81A96b8b8624aB7040523C402c202",
    "userId": "325172820"
  }
}