{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "555239202",
    "entityType": "User",
    "nonce": "0x729fb2e55c9194548d68b438a128a35fab275a5350d21be5fdbd917fc712b662",
    "signature": "0x3f16d77b830c3bf43fc44d9f2c645df9906834144018e0c18406dabb9688032e6ba826ea2c369908b64096137b39b3bed9d679661cc08e50c3db05115741a0461c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}