{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "875797218",
    "entityType": "User",
    "nonce": "0x86fbe38ce409d13ab6c0e5a612b7c3532a6792734b08b73385a3d467c4045850",
    "signature": "0x9aa1a79eca5e0b8c6f7c4b542b1c8982e16eff8b0ec8472d4d7117174444733b4e8e0f2c1c34855bd1b45dea0dccb13226d52467c050245a3801e1f10a1dd7291b",
    "signer": "0x14fa63A530B7d9254d20B110AAc25ABF49fbfa9d",
    "userId": "182428"
  }
}