{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "18122",
    "entityType": "User",
    "nonce": "0x8064159a5b0a63e2db19f118373a75d8e4f615b140fa975ecb05e389a09dd72e",
    "signature": "0xf4516db4a6cb936632a6702d5cb47fe00b0efd672ed9574c3008ab0a17f11e78166112ecdd14a767b53d394112f9597da6762c7ee1eafcdb309581850a426f3c1c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}