{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1881128",
    "entityType": "User",
    "nonce": "0x42eb0fd4ed505502b490cbad4b895bc230b6f321853433682f32e88fd9a24cae",
    "signature": "0x50a450976fcfe7582799ef5c01ef5e4b651f19ac88d08f21093df5e7f428a33e68accfa5b4cb0e026c2a95abc2184290af3715d0de90da450867464fdba321331c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}