{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x70dd9de0cb1098769b1400d3770285204d4da80305297c543c41d20f12801787",
    "signature": "0x4fb5501bd5dc68fb952c316becd9f7d12dd74cfdf02dbee04e83aa0c3d02898a62f709f82d85862d455910a2f47bcb55f8451a3645ab5203bdbc3040bdbe368b1c",
    "signer": "0xd60220f53c002fdC0a2eFD6336deE7ae12ACF639",
    "userId": "442717588"
  }
}