{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "898778028",
    "entityType": "User",
    "nonce": "0x99909a0f655fba2022fa9aff1aa278555691f858a5a9ff8a2fef8c02c8f6dfb7",
    "signature": "0xf9b381fd5f1011921b622de8e32362c8f07690f0aa565f7c56105de3a530bd3822fb2c416b7fb5bf7027f753d05e0125e0eb56e949cdb023d12890eb2205ee521b",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}