{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "720251199",
    "entityType": "User",
    "nonce": "0x401c9a0e6197f4d9e95478ed002769f7518bc34fe9305689506b52b9c3c18553",
    "signature": "0x610b0b62eed7f1c99dc7e66db2587431c16a24837cdeeefa185ee68123b1615a421f12a1d7e153e7886c7714ef249dcbb52c7b5d68a8921d7bb8dee9807baf021b",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}