{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd974ecdd7860a6d5008e98ec35998307044b3bc373816577d6b7297c8595c0cf",
    "signature": "0xd72e6c405e80640dd671ac9223b57121a787ac17986712415dc7d3349feff5251f7280b21852bff49e1dc381c8f1c77a8f566deb83fafbdb7b4478829e9b09fb1c",
    "signer": "0xb50A921EF3b2d7cA7fe3e233722Dccfc113aFdcb",
    "userId": "731336000"
  }
}