{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "279",
    "entityType": "User",
    "nonce": "0x393ce5a1900d7d866efefb38d2e707f3f8f904b8e8451e5b17c3d5b12cb300a7",
    "signature": "0x621c68439b0256b203fbd759077692c9d46a8d160d42068c0eec35fc19dbe26a6d20b66506bbb09a30e1f5e41cea35ae63ccb9978b0e356592e58b705ce1dabc1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}