{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "789681777",
    "entityType": "User",
    "nonce": "0x3a36361ae1fee90ab4cb84bd520037973aeeb0e6f673906ec666ab2780b72a0b",
    "signature": "0x4749d711ab62cd960fd91cee39e6f86180d8568dcfcef1bc2d84335b4ef169fe016d30c4adf388d7032eb7b0013ab6b3e8d2161cbb84c6c6ec15e341f1c9e2931b",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}