{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6488f1781c9ff1a2166d6779327cf5d78350b2abb590405885cce37cb65d19d0",
    "signature": "0xd4ca2959cf3f88dfe67c80c2467481341e5fd6b532e0b9ae4803579302c27ce07e6eac6bf4ca729ce36b997de88fd43324e55dee671c2b6ea7b1d929124241b61b",
    "signer": "0x1532bbb5E3C9d3325f92edbe22EBeE8F5C43eB2F",
    "userId": "297337347"
  }
}