{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "667809204",
    "entityType": "User",
    "nonce": "0x579b343ebd3150b8fd09d576184b805d4de8ab8cc1d671fd405a432cdf33a7ba",
    "signature": "0x3eca1bbcb0a16fb7320a3a5624bfa040bf4fcb7f7c7437d5661c667b7fca091e34c55f7a53a5a9fc22256fc39759d5dc79f8a64b6b7f216f570cb1be3a206f031b",
    "signer": "0x1788E4C39d3326e598F16767C69826869594E359",
    "userId": "116504833"
  }
}