{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "106409722",
    "entityType": "User",
    "nonce": "0x7f99f34426bc6d350decb45992c2f18c89bbfca35bb7ee30e975827d3230f841",
    "signature": "0x9ac94304f57282b369d8b73d51defc4ad0b8a48db1bb65fc51ca6aaca754079d4020cbd20d4b10dcdb6a43cd873748fe165fa83438e6691b83c7e771aedfe2601c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}