{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "381638009",
    "entityType": "User",
    "nonce": "0x15e2f37fa1f907deaa13beb07b29fb6728d8d76e60674581cc7b3c218e858978",
    "signature": "0x6405511960bd8973bcd06ba47b03114c8ba78bd8e553135f79198868822bbabf1c2b42b3d367c7213378ff540c7ad6211d6d864ed3147bfc533e62203003fee41c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}