{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "714646433",
    "entityType": "User",
    "nonce": "0x38bb2d90b3a0221657db0281606916a5345d560089c383b62cdd481b3f15a61c",
    "signature": "0xc53543231376a01d91e5c9f90ce0c82b5401f36f69ea4ca4c2c680709357a8b94eccdfcacd638bf64ab6e09bc53d9ea550a372e49d74b62ecaafe75ece69bab01b",
    "signer": "0x73C69e0c0a50f0E228106C863e362C350a86Af87",
    "userId": "190031"
  }
}