{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991751",
    "entityType": "User",
    "nonce": "0x78081f2d27829549a3c0b5517263bede9bced8aa4158df4a2e495f029032c2a5",
    "signature": "0xd5e4f244d4b7f20c1a3216aeada149867c736fcc09576267bef2558f59e483b04b11da7cedc06e72ff673ffd6d20ca97116fadc66a4b81b1a16a56b7bde5ecf61c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}