{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "320580",
    "entityType": "User",
    "nonce": "0x6deecc5e05094bf2489fdffe9c9b3fdd4f61be05f91e61ef174d84603530dc05",
    "signature": "0x4bb1665840840480f3842719936f059bc0277bc3ea0dfe7d5f73408eb803fa384da1bcd7cb7d97835d1b48e9142afd2f01a623b811e40b6a99ab626f61b0f1331b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}