{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "526536329",
    "entityType": "User",
    "nonce": "0xdcd1323fc8012ceea64c543cd050743f98a17e8ce7cdbdce86aee23ff38f2739",
    "signature": "0xf94498288fb742956c65c176333a5dbdabdd13a2d0e662a45f503a535a6fd1f020c3d023686e8ad9bb5936b80e8b13d0ab6e2f120e02faea3cf7612fdf1177881c",
    "signer": "0xa603e9487Ed7C3C62E8acb85f8f32acFf5d6349b",
    "userId": "278135553"
  }
}