{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "536929244",
    "entityType": "User",
    "nonce": "0x35796bb183bc42b180c255db6761ff98eba81f71bbb32807c5babe6ed5e73f34",
    "signature": "0x0bb68f8fcf8d2af5267e117763fc2ff56f35579cfcdd43c2585009fe9f3deaba11514bd92064d8d24624edaa3714dbead432620a35c60eedcdcb45f03c0f11111b",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}