{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "39488",
    "entityType": "User",
    "nonce": "0x290d8e946a3d8e521533f9f995e9dc25192f16784273c55785787099dd31b351",
    "signature": "0xa69b12de3291f024bb75525c26f44e8da126b62c4c25fd10e9ad27c8ae4fe6fd52c430ec744868ff5f0b46506c83da032965d6b95b044a393295ff6746b408191c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}