{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x411acaf4709c09259f189e922d0478252a6adccdc522c6eae4bfafb36f040bbf",
    "signature": "0xcd70957be07632f761b619a839c69375a292246ac75d07584e22a84d33780bc454228c6a9d610b0206f1abcc2fafcdc3958923ac078778cd89a0222df99758a91c",
    "signer": "0x2e1Cb3644DC0693bAF3Fe570Db536775d66210bB",
    "userId": "80900810"
  }
}