{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16251128",
    "entityType": "User",
    "nonce": "0xc9ccfb2f4864c4d9f459dadf551ca8e9d45f2f96e179afc38e2ae8c3c367a4f2",
    "signature": "0x20f9408b7ecdf4a0c4920a1730cd84a66fc2df2873852319b04e3b65b6cd08fd7492a17920c77c7290a001222450020f3c77c563a309ec2bccc141fe3d18d3151c",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}