{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "78123",
    "entityType": "User",
    "nonce": "0x0b1d7e5abbbacd47da3809383c1483994c4b24c9e9ad3b75fa32989256ba9a26",
    "signature": "0xe10233fe68458f0550b4e7135aedfffe1333105d52ed62e10a865fdfdd803fe30df069dc2776e098965b9841fcb188a88fcbd3abf7a2b02716c419dea788f7251c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}