{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "76829893",
    "entityType": "User",
    "nonce": "0x8fd68bd3b6e3ee3dbd025ff36d2b6caf24d069cea482f38aef7f86da3ba68d61",
    "signature": "0x683426aad2915106fa56cc17f432ad8a7c92b2ff932d4d2f2cafa1fdba0db6a00e611dacc274a3214389b71b21b50aba06a32c3105d199bda6db05449b312cad1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}