{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9e123c00732783c0f5848b4a95d0c6c907042041b0d141358c3856905649df83",
    "signature": "0x57675238ebf38d3c5c8426fe4235d310ac6a28b7003cab15a76b87eab505d00f6cd1e4034411368c9459819877362d01a3528938dcd9513fe42155b2983d66971c",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}