{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "338304",
    "entityType": "User",
    "nonce": "0xc5f272865f16b70d960e7713c31e535a3e0ff9607b3c9bc0cdcd1735e55e0b45",
    "signature": "0x04065165cf496718b7ab67577beb32c88d3e8a31b86c9600ca060138aba562005f552eb5137a68f2e29af86451a064bc9212664a8559d0ddf70d40c46287042b1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}