{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "15642",
    "entityType": "User",
    "nonce": "0xb594206a8de5496ca36dd2edbd1fdef094fa84948fb25baf4ce017aac53cb3fe",
    "signature": "0xafaee58309a4e66c777d060eac0a57680c0e4c5bff2924cb1263562585519594262663956a38f5f9cc39b9837969bbd6c3eb5abe93bf862c079d706ad441c8d71c",
    "signer": "0x29DA29cFDe586469112dA8593Fcb9B91e30468e1",
    "userId": "121018469"
  }
}