{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "290283513",
    "entityType": "User",
    "nonce": "0xf55842562a6a3bfeec5e486d7b1818d027b92f6d3a59c7caf35b7e2471ae58ff",
    "signature": "0x5d709325b04e7507aee809502f2149232710ea6dab15de449e3e2aa1daa10594140b91e6ffabeecedc061412e2c268dcb0f71c3b03267a639d35518d794c500a1b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}