{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "393983",
    "entityType": "User",
    "nonce": "0x184c03cc39fadfcc81f52e52295411e17cea0de79012be3d0619abe05b5172ac",
    "signature": "0xc80834cd7b85ce1ce4c709ae128fdf5866d33f60f201b0c5bb209c060c0f085d1b3b85989143bcd806bc51f311c1bdd2d07b9105d3b433767118e205b8c5769b1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}