{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "199181320",
    "entityType": "User",
    "nonce": "0xceb07463adac76837a02001021ab72b37f93ccfdbf76670c73770461a2cef456",
    "signature": "0xb18057e444823554c64ca1c6af33f060e6c1d67e76fa9feab84db9706f3d0f2e240ea09681215302ad002148ea251ab588108bfe7b96f092a4cbe965e11e60271b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}