{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "409647715",
    "entityType": "User",
    "nonce": "0x9abfe5f9f344dfdf4c37921e9a6006ecf6f324c082eb6461528a111898fd510b",
    "signature": "0xfebac10f3357f087a4cd2c40682ed3de66645b3f8aa0a52cf50bf3ad7a25506111f9495323934a98f8ad171affdf66031e2bd4fe52bffc1f82e6fec3d4d75e3a1b",
    "signer": "0x03b70C3825d7b9e568C53C89a738061d855d0dec",
    "userId": "578849678"
  }
}