{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5396fea77e3b5ee99b65c770c02311ba9422920ab06b07915e705918fc0e3d38",
    "signature": "0xc922fb77a49e69274b73cf58e81981698fe6a0294ed4292532e4053c50e5b8bb1ca637b53547c38a36208c837ee3e8c6aae10dd9f440566b9821df187bb066ee1c",
    "signer": "0x2CdfB6BCf53D9E77fd3391b1C6eA83B432D6f3F3",
    "userId": "422437197"
  }
}