{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "100976759",
    "entityType": "User",
    "nonce": "0xc39a3e8e4210924ce2a60dc40ec8e344a38f25fa91b2e31ba86025f88a21b63c",
    "signature": "0x586de5f388d0db8d0ba8278dc3895d6d6bcaed1d3d8ff406d805f290e8fef0635db5e566eb2a4971c546bd3de9a2795e4850e80451efc2e97faf9473c988f48a1b",
    "signer": "0xa3C91a44f620f0b95468bEC359f89edb95AE3cdC",
    "userId": "904405512"
  }
}