{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "124141",
    "entityType": "User",
    "nonce": "0xe2a6a25a412134efc9743af6bdd7c8ed0178b3c21425e13d4d71e4ec4ffa5419",
    "signature": "0x4a16cf70b823b0ca927fbf1355190b62a78b8350dfb51e75ea914a25c9f0cea70d253bc50dca6909b483cfaa603a0d3edd34439b279b8ba8ed403b850c6e65701c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}