{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "990579",
    "entityType": "User",
    "nonce": "0x9743e062c210dbb552722a76b8080f0eee46714432338a16642c4d60ac8842ca",
    "signature": "0x4bba1ea4b2c97b0a3d482ed5803b1da0aea19b8d8384540aab1ecd8777c9392d4f273e24c401670bb650c189d7fe196bbb2e6dbee7056d28f4353cbefce298271b",
    "signer": "0xF08935327AeC6306C8d0eb92999567e5496848C9",
    "userId": "989073793"
  }
}