{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "446645802",
    "entityType": "User",
    "nonce": "0xdf307594468ab7a80bbb4114faa1eab896e2d5d89d837c9b168bc8ff9867a71b",
    "signature": "0xd526a2e5edccfc5d79fee814762558ee933e3f5af232a70f8dbc13a4456c90165179885a479d0f504c2aded82175af3c8d530462d068aff5a1ab00b823ffe7ab1c",
    "signer": "0xA7259EB855a783771055Af9c4EBE8985D28bD4Fb",
    "userId": "568068817"
  }
}