{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x30931c59acaee290fbfd6b58d4c1e1d24364242a955039ddbd5bfd5a9481e729",
    "signature": "0x9395e2148bb6e349aa082762653634c876d960d35bbdacf3736ad361ae9f1fb000bf7559ea79317697c62cd17589960d062eb6ad6e97a987efb189beec4d68f81c",
    "signer": "0xc4f43cd53a0AB8479f49926948a960420F0286bE",
    "userId": "535039192"
  }
}