{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "243128083",
    "entityType": "User",
    "nonce": "0x15bdeb1d650e42f6bde915068ca300e2ceef01aa21c23c1ecdbf4cf701398a95",
    "signature": "0xa6866b51d83d10f8bff172085567ad695c766d3f32bc08a55926d4aac569de6941e78e5c0e882616b0f01e31e0dce954fd45c5b52bfb1ce856ee174fc7a2f11b1c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}