{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x8f86275b1a02f5956effca056e0def3817496dcc902d62f92fbd14c40734b8e2",
    "signature": "0x14ef9160e9727e4724beddc0a0f7dded7822c77593f2d967cfd1c56341a466911d57e263c47e54f99d617f38ca429b2682d2c544a5fa84dbc70dfb34184661f11c",
    "signer": "0x3e48DC5763519fbdE0A26db7C59929E8Bb6B8Fe2",
    "userId": "971129804"
  }
}