{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "727223684",
    "entityType": "User",
    "nonce": "0x496bbd68e1586c63800a6643afef84fd60fad1afd6b67856bb2dff177e39fcfc",
    "signature": "0x15a286aed6d5157af91def9cc6a2be382c0f8722951a6de18cb96a595ba59995701097372f3a225c4f155f5f83918b740dcde7c184a446a6979a0ea9a2c82dcf1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}