{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "123439",
    "entityType": "User",
    "nonce": "0x3e2d4d7b3c1a55ef4472bea488756f8fdd21714830e0eace9bcb17a910bab1a3",
    "signature": "0xc0313587b66fa1d4651ce36f5aecff4429e6670b5701ad0a6084535b89ca233f7a2e991682c236c7f085a107bc459bc3c05a22e210d38b9b6863dc516b2875ba1b",
    "signer": "0x069B8AfA1738ee411F7138e49d8baA21774732C8",
    "userId": "403438532"
  }
}