{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9423421c5a1e1be5ed50501dff4c43e0b89306654ae81226155fa1cbafe47af4",
    "signature": "0xa80cb26158676fc50c2d216b9eb39ab3401dc92136cc0a1b63a945c41158fffa4ea4602b3b7d4102a36b280a9cc82ab479254154cf98bc09cb1ba5d31ec1900c1b",
    "signer": "0x2Ad423772F820cF8750Bc61a24e23059BA26A130",
    "userId": "8174754"
  }
}