{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "438120",
    "entityType": "User",
    "nonce": "0x3c579d75fa575117711f15ec477751c37295aad4969348cb16da32b0d1893e6a",
    "signature": "0x9767beba167295c522297d7397e55bf5222ff777471b0be8c2d5cb11aebe04d779bc5b3bd7694fabe52ee2f1fe67eae0e4e44229556e46ac5f958f58484c61641c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}