{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "774557384",
    "entityType": "User",
    "nonce": "0x0be5da0e8c3c86ee337691c922d306c0bdd5400fb5611b989d97c0551a2ef7ef",
    "signature": "0xe2d8ff2ecc9ee2d7ec529d9ae33623c0ba0629c14a688929e1aca4c16bbac47a0ecc0252c7963e3327cf81f64cc0c1724f7161e77087f9773938e41afb3809141b",
    "signer": "0x7964a5eF7E9a780013d3886B40ca04443D69588D",
    "userId": "224019652"
  }
}