{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "311257477",
    "entityType": "User",
    "nonce": "0x0519610fdfafd367871c1fc56da90f81a45ec4c8b8c2c1887475716c9de9e059",
    "signature": "0x1850a09998037aedc0fb4383590391c6fbe08d8dfdcb06ebf951b1b27ca48626015ba8fb5b2953d6de1a251ac47b7826185bfaf3763e4e97f3b2d368582a383d1c",
    "signer": "0xC56E1ccbA93c1E645e5F27Bf8A5ca13eB7A5eEbe",
    "userId": "335878078"
  }
}