{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "902557325",
    "entityType": "User",
    "nonce": "0x67c6a2f01005b90ee483acc10633379aeded611221b26500cddb3575f4b9f7e6",
    "signature": "0xc1fa07a96a0a4f333255fc6b6ff8a1321a379b0c3f0e1e5d4499bb85afcbed5d3b3d75b8ffd016043f3708e251270aeb444c55d5e5c4efa5d0af18d26964bace1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}