{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "900057687",
    "entityType": "User",
    "nonce": "0xa00c219b587dac728c60aa92358c6279d85991717d3ef46f8a182015a79dad30",
    "signature": "0xaececb603f569452fc474f2e237a5a188415d768c281d22c1897c244537e797472ec80987be7e4ddecf630435b8973e3d7e3b7151c590a8f691292cd2489308b1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}