{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2f532e138cf558dbbaeb39eb56e3ae8dbbb962209823957ecf30d19fc4288934",
    "signature": "0x7071167298b6e0f60273d5d737425f64c64161e575c7614ade8e100f593a24c67887eb96dd8ead03deaf4a06f78638df3701855c2f9323d7e22a32b9e541038b1b",
    "signer": "0xf42e31A83CF7946fe455121c219903Bda8478993",
    "userId": "941574958"
  }
}