{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4508e467b25ffd8effcb7386bc0ad11358b093b732fa64565b59a6eff1280cb6",
    "signature": "0xefed60d7a9e048a29884d20063025367130d13849de1cab3955675f6685a0d44329224d3f9a89695e34a2fce31efdff5b613f649626e3cd23f00b6f6042f10ef1b",
    "signer": "0x31cE923A8b73598247D8639D61384308dAB45c94",
    "userId": "338949331"
  }
}