{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "972435607",
    "entityType": "User",
    "nonce": "0x13116051dbbf5530a1410f61fa6421aede9440e623efcc9e97345910f1c2a03f",
    "signature": "0x092d740a570b5506cba656baa675549a4355d68b99279546bbf2c8beb04a17841af4b2b4acce7c9dc7eecaff6ef2334a3dfb78de9d20601c00a49def02f557451c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}