{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142213354",
    "entityType": "User",
    "nonce": "0x6776d489bf16da9ef3709be73a6d5f56ea808b521f7690f3fddc9dc26cd7a315",
    "signature": "0x3c92473b3c8c67c045360b4585f742051270afffe82c5989f318c05e0d143b8c1dcc9bd410873d16bca236589e8610e9f51b3ab54e62fac25e4648f233b98edc1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}