{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "404",
    "entityType": "User",
    "nonce": "0xc4abc1b531e3bd39fad569a2906b191dbc4d866bf3d4ddd5eb0ccd1e10391aa1",
    "signature": "0xe7dbb1aa4b95ed5c71d6385c42fccd772e7e6ee2b058b3be2c16b3c6323084222497644f44dd227bb47cfc465a2442c7c02fab0c0976a8c6ddfb0f94e7e656821b",
    "signer": "0x5c8AfDEAc05FbB157876C04BF36E221C2318278E",
    "userId": "593502567"
  }
}