{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "581175455",
    "entityType": "User",
    "nonce": "0x7f7dad7d15bf8fdf3cc8259b77865ef32d0b51fe1bd23e90aa26ce711217e3b0",
    "signature": "0xa7795a39120f1e6fc9c946f8747fb2f8cd081292e91d573f4f3af182f2f2d09a4ba43150674cfe743f3ba91593fad2424fbef72d63df60c11654a4f790afbe881b",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}