{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7970374adde0aefc3a7ff8a7508b3063348d9e81fec5125d30bba08267725d73",
    "signature": "0x069cb66c678d64395c1bbd6cfa58bcce93f1b6717dcebeb8fbbdb1849ccc21ed62838047d90cd7a2ed51082fe514bade570c07a05874173b71021a0b5bf1b0cd1b",
    "signer": "0x1F7AD5e639e74f62C577d6ee9140C839b0100481",
    "userId": "513323235"
  }
}