{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "342017819",
    "entityType": "User",
    "nonce": "0x7bed43fb07bc563f95ae4476cb27215096d5b08290c45a3f5c4fed5ad6410315",
    "signature": "0xe3fdec988edcc4aa424ae833cd1f17a0d9a805d751709d7edac9f7e2772a5c6c7b924bc6f7454759bf76549e958827943084b26cbb5cee3a18e1380d8513ad441b",
    "signer": "0xfB6436C438F897b7eA739876B4Cfcca832868820",
    "userId": "512354652"
  }
}