{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1915856",
    "entityType": "User",
    "nonce": "0xa74d1cb67e7f543228a8654101044a3e3c4acca0a8de9e8ff2d51251a997e947",
    "signature": "0x7b732bc0dbf7026ea6c444c803c09668c55508987d0050ccd975d83a183939a13fbf047fae87dfd71a201bf15ecfb6029f9715d057e885c5ac634656ad53303d1c",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}