{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x012935f746be93d5c51a385f7f9d01925f84f45ad78a67fc113fef13781298d3",
    "signature": "0x9ada9788e7096df784daf7b81b849de5f93be4fd29622276941e9510f6cba3d66f4d04266eb5d60a541b59f62b87e10c77865377980df2b0bc0eaee767a71f1f1b",
    "signer": "0x4FfB422B87Dd21fc7607B20170C5eE323e1104C0",
    "userId": "173675496"
  }
}