{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xced1627618b9115a3d990ea220662ae5534322c25c88976878f4607939eee619",
    "signature": "0xd37af2044ef1b6206c81782d247fcee90a2b8ee4d0924222c84d9e47efbe25de4c2224c11c0779a5f2bcadc07ccdb39423b3bf6766df603feaf1d1f962cd736e1b",
    "signer": "0x4De48fE1b56fD037B5cb86AB17ca457Db6a575eD",
    "userId": "60008468"
  }
}