{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "659957221",
    "entityType": "User",
    "nonce": "0x9d40ccce692e3bcb810da3ae6876fe1e2d9f9c3b5f56520bb76cf7c248177796",
    "signature": "0xdfeeec825baee1281fb9f57932e413fa8ef4e408db4cf389ed47659d80b373dc07f5b86af0daa66e6285ab93ce525c8983e9dc9e120d1e68444c8b0aeac20bdf1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}