{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "620307004",
    "entityType": "User",
    "nonce": "0xd73cabe32459582eac2b179c1e7d019596f334e1e515a0a24e9e2ddaab94e95e",
    "signature": "0xd8af6039a8547c8259013ae16364b0e2bff928dd8815ffe478cddb9d4713097a1458e41bc5235c7b9d69d2c2a59cc9449f73e7e0e6b6963e2651df7540262cfb1c",
    "signer": "0x52Cb4b468190D878a90e6d678064532b2405fBC6",
    "userId": "184931764"
  }
}