{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1739285",
    "entityType": "User",
    "nonce": "0x577727676190038ee6ec77ca0da5cd3c2da0a778cbaca91a66af70912b5e667f",
    "signature": "0x0f7f42751aa613aef0b954a864014faec14c1867e1f99dfc69b727f77d993c1a532f00856d9351b349e6e351cfcd0e49ea645d5dfec8ef01cf9b30334f65f0621c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}