{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "303",
    "entityType": "User",
    "nonce": "0x388345c4a4ead5ad52a4186cbd9c667a0beb1a7d57e1f4a9f3bde122d0edc496",
    "signature": "0x6f8828b1434b4c3fd9977d92d5e9d3f071d123dac4e1db20f3808ded4b62dbea71b2b05f9baa3d905715ad81a3c959c6d8903efda0936006ab54198ae8c317ed1b",
    "signer": "0x926F8d71a7109CF6Cce00DA74e1BcF50aAf63E8b",
    "userId": "358546053"
  }
}