{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "612014",
    "entityType": "User",
    "nonce": "0x45af502bfd25cf34062dbd0408c969054f5f7810d9b1f064ad7db4da470e5298",
    "signature": "0x664a99a428749ffe61d8ec3a9a8c6f9de88f90eaf6a3f479be8e35e0fe56b4d679ef4933fd64280c5cb394ef278e14aab42b4641e0baff90094bf5795b3df0611c",
    "signer": "0x44BAdCFCf42113CbB67f519e4efa576B336f9bf7",
    "userId": "136844578"
  }
}