{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "256479919",
    "entityType": "User",
    "nonce": "0xda7795480ea5fb6cf8dbb5ccbd52371b2437a217c7ddc6bee3454f62d143950c",
    "signature": "0x0208e8c3f322c82221c94eab7f9586359bf67bac5559ae65a243497a6000fa8260b65def76f621bd47cd29555216389e8bcd8d3a2b0f0dc3f1bbd4d8552d29a81c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}