{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf9538aa26ce61929d37bb84b19fcc1cb37a2f126cd78c6a32b430066fb84c587",
    "signature": "0xf52ebf58238a5a91b94aa5aafa26149c05d3afc4524204f8c529b4b74944a3d46200b271e866e63b507c3115da651ef689e0614aa28b8cd038a71944c758b3a51c",
    "signer": "0x433B6949BA291D415b88F2ae8168DC238f50e952",
    "userId": "452956272"
  }
}