{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1889",
    "entityType": "User",
    "nonce": "0x8c47eda6452b981acf64a9bd749b0f8c943fe56792e06771c0bc1d867b9e8932",
    "signature": "0x4fc9bd3dc693d777827ace61d397f6589091352d0cb07ebd02893dc1e2a0cb18030d2322a3e7fe7a0f8f51ca009364d053004da188c8793a6ae43332a52e03d71b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}