{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0xa15df6303a793560fd62e633bae5c561902e749dc4b99fae0605b83c6c95c336",
    "signature": "0x6f0aa2ec0cd2a73238560a1c9ba783101beb059caef998c8752da84d38ee41a22640d084fbb6027d4c877946609b35a8e2a30941058a4b838bab161d15b832fb1c",
    "signer": "0x48ECe992edB7C739B36f37DDbE8Fe352996B5A56",
    "userId": "183063753"
  }
}