{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870318408",
    "entityType": "User",
    "nonce": "0x0b77f6a2f7816a4af8dcadc969316464fdab3eea3cc8550ce94088ba2a6ba128",
    "signature": "0x76e6a0fbf2eaca5ae745b0e0e4658cf48cc603371c6060df729a2ea9640fd13128c88c759a2759e41a163badd09f3aa4910ac23f48a35bd3fa3a7e82b3aa46da1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}