{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "254280",
    "entityType": "User",
    "nonce": "0xf5742e95b4c27ea147f79bb63444c0b9055c2ff2814dd4fa250ae0f765e91579",
    "signature": "0x8b66dfe45273ab7b049f2027d7b4bda545b458ab04a41ff230689738f56ea189223368b1c5b89021796758d2cceb1300a1a75fc2fdee1203d2f5f480073d03861c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}