{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1685453",
    "entityType": "User",
    "nonce": "0x10a9852e5858df6154d58f872f36b32dc34dff8568f834b5e1fb6cb34b0e767b",
    "signature": "0xde68809369d9f8148e9e0d9d7607f404c3a3028304356eefbbd812a794e4a78710027e4281060ba1d9dd396839904ef0dcdf9f6970b67d2f62c784e322ae14521c",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}