{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "657936",
    "entityType": "User",
    "nonce": "0x4d7a26e1c7ac775d84cd61255cd6bbc959b147290db7f423ddba1dc75edb5d75",
    "signature": "0xdb2a2e1a30f6956150c6064864e870416913148a0f54f674c83b4933d61c33a151647eeab449ded43c9283456a670f980cd3a14e8ea3a5c6057e250bf62c57fd1c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}