{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "876925244",
    "entityType": "User",
    "nonce": "0xc2236b057c835576a5c50ca80e9ea98f9f5a08c02d4eeec3a9fe1f4f8e915c1f",
    "signature": "0xabe94bbb6e0bfc26593140d1433463f828b17443bd4667bd45ca91aa012b826117e5074ccb93f21ef2e08a092349487b21ae50164bfc2d0ca65f750cc8ddbb131c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}