{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "475580419",
    "entityType": "User",
    "nonce": "0x5672dfd516b2f95df1f3df41109c73653454d21ab4ef52e5fbc174069c795483",
    "signature": "0xe20c17cf58b723abc8007ed8811ae7fe607f04e4725a6554acaa757d03ccc9932460d0c3d919de737a18d0edcc3dd9c3bc19c1aaa8705906b539133ae8b776111c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}