{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43431",
    "entityType": "User",
    "nonce": "0xed9744b00fc1fd096917e81a9a69b9fa0bdf9b17769b5dfa6ee586ca05e662f5",
    "signature": "0x57b141d205bec13bd48bae91ea316394eeb37ba51ef378a18bc78cf72acf91bc021de9abaeb79105d6834e2f8f6f344142cd43bcf63220a9c27b478d673d3dbf1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}