{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "489557442",
    "entityType": "User",
    "nonce": "0xcf4550532368de07175137c2c500c94093d9cfbba1e2c519920303ff1b02c0cf",
    "signature": "0xbd77912c843c46b3b0b0cc10ddf139e8d25c3d15964f0ea6db55442652fb79d76b6727156457db7d663890dc3084bbafc4fba46929df2ce494369c013369dbce1b",
    "signer": "0xE043895C8FfD2B49bac2344cB728935E7B4f61Ee",
    "userId": "777109830"
  }
}