{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "235412",
    "entityType": "User",
    "nonce": "0x86fc71fc466eecc6f95bd585d1a02083c78d764c4f0ba3c143416191dacb44e2",
    "signature": "0x9f7b49cc0eabbe944a482a8a84a86c75e6795e788df1090d055c4b348412a577251a8d97936bad3e15fc211de36d530c4aff70bbe7396af102ebe995c96e03cf1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}