{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x39b89c8947b60e5a4a4657e63e7bd933cf88b47a3b8fdc089e64f146c31bae69",
    "signature": "0x254d870b881a4d4e44af17e110bde7921c2a6ef44caa107f7332da863c555d67205a53a57c06e8cf4367c9063aece1ee5cdf5b2cac72ce38f74794cd2d877f741c",
    "signer": "0x6B88A2F8d5DBB771e20eF1424DaC7fbB99937eA0",
    "userId": "443451991"
  }
}