{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "28729",
    "entityType": "User",
    "nonce": "0xef404929b925b6f33d9b4c8571c8b5d453b8391c21b1bf1647ad4fa0360823ef",
    "signature": "0x1291c5104a493738a698ac2ca30fbdcc66161da5d6ee1453c556cf6716b1bec21af5573c8b95058f58d4dcab8b1cdb8978aec391cdd875792d3aa1f1f24f6e3d1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}