{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "390804",
    "entityType": "User",
    "nonce": "0x260e1e3cf26f9f2ecfbdd6349116ab766701e67a402b0d67b086833498c5cc09",
    "signature": "0x0c452acf480239fc74c5ff0ee877fc7456785b8378d198a4a5632a7cc69daee64bb146c534fde7b22678e78aa065d22bc5bba777f4f2f9da9c60781e3cfcdd921c",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}