{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x14c279d1ee46ec348ca3127bdec12c53e6a0f0d0e6140f06e459721a76a4a289",
    "signature": "0xe3149a820477f0af74932bf76e48e47257041a21a4d28d6643587e1e6872e88b524d2c5a3bbf7e62fc4e34dfc492a3d0d13135f1603462bc517a0ad4d6eaa3f81c",
    "signer": "0xE57534442f58c5dadb8276f6F8799f9D619Cb999",
    "userId": "668594285"
  }
}