{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "163391",
    "entityType": "User",
    "nonce": "0x11473348eea937463ff99b7a9b808d4717f8b7e2e5f375f13a057dd72531ebe6",
    "signature": "0x19c56e6be663ca4fb1f13746e9a1b3ff6f0af3b49fa41af2d76d1fbaae2577b369df6d987bb65656a2e40ee412c82c669e968b860c81201a0034b51c22136ce41c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}