{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x740846bccef316654d1d2d2d395262b3c44e90bf9d05f3b5778ac6d0c4d40b5e",
    "signature": "0x651d8b8e332b6454ac02b7694339e0302dd5303f89be6b8b39413f8273a46d8b5bc80a74aceca8ae9913a1efed5ae2ff2e84e0d9cd8b43527f3643c3233c89aa1b",
    "signer": "0xC2a8B5A9A179D01449a463F05A847132bdC448f1",
    "userId": "858996316"
  }
}