{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc24c9fce0f62e1ed4efc7c7c2b231c78b10cd5ab4ddc9d9bef946dce7d20f185",
    "signature": "0xbc31e4de0a6392e4bab2b7cad13079e7786d9f8c7fe9e2b00760e1184954469879f2b698ac3f40edc5ed5aef04d4eaf99e29ff702054771df55224bc7d0a38371c",
    "signer": "0x28dF9FBdA15a000Be23B312139699601519D9e6c",
    "userId": "132589876"
  }
}