{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "393542",
    "entityType": "User",
    "nonce": "0x0a3eb699696610ffb655bac3997ed0bbc4142933175e6e245b6a5fbccdfd4d78",
    "signature": "0xd8674adf0a5e6b26372f79a09b5d131f1ad50a0ce390db63854e1817defa257a7baa00021d7770089ee5cfa169a3643a3006e9b2c21a4d062e6041bf6184e1d71b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}