{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299591",
    "entityType": "User",
    "nonce": "0xbb66949415fdd631d81e9724fc4d5f83b6e4f456aba3aa80215c6a440785470b",
    "signature": "0xb11805c235841bfc7071cdb38c0bc5debb5d9769c6a18ac061345582b5bb2421319dda95d6b1d81b359d323d8c9b707463949660649facb16e65061add5e29ea1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}