{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "956403",
    "entityType": "User",
    "nonce": "0xd4de99c75aebc2326fa0484c3f5b4157f5ec5daac8a10f8444e30d78e63cdae1",
    "signature": "0xc751c3128ac1b72afc882e587622c8baa59270e26f596cdcade440e468460013057785b528cb529eecec7a118d2deb5948f7f646eb843e12baf9365b6b350f521c",
    "signer": "0xb81F37e5a07cC28DEe619D298e732a131680DB32",
    "userId": "418741971"
  }
}