{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "774741623",
    "entityType": "User",
    "nonce": "0x1d905c24652546017895f6ff07e986c1c7415bce979479ac0d440e0381fc458c",
    "signature": "0xa27a12121ef515b3f381aedf15826ed8eda83124c2f7f67a4707a79b8f3cfc5b7db6244549a637a762c8ff79f3b8a6e2e871a471ea4c3dbb0ccdbf769222dfc81b",
    "signer": "0xDfAC0702040EaBd2d42e773014D4b014C0747D9c",
    "userId": "707937"
  }
}