{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x37b0897d3c24e6b339ce25ed50082e7234d9dfeecc1b4742ddb9515a9657e031",
    "signature": "0x8c44ae049dd54562c8803a53c0b979af42b8afffe228b58417b460fc3c759b323b0fb084dde8689785d4f58602f89b8a4676c7fcbf7ac160d06af32008f592471c",
    "signer": "0xF1456b30840C721fc4322204aa29F8Ec855AbC4b",
    "userId": "418944733"
  }
}