{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x8c202b90f482102cbe9c39ea630b6bca25d476414ecd18d1720f844f96d2c86c",
    "signature": "0x141e538398e535f5db41ef362c1c44241ac333045e7e3db1e4ed556c313c30856547985cd04d6f13142f7bbfee7c0ababdadbd49b4921583a81c173229528d801b",
    "signer": "0xDe6128EEdBB4d15D391871267E286E878C7011B6",
    "userId": "144906061"
  }
}