{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "557210595",
    "entityType": "User",
    "nonce": "0x1b46e756f826e0d4c84624423632556142a755e256929e24e07f22a458c3bcb3",
    "signature": "0xd869be8e7cfd69f09a20dde0fc7215fd6236784d52fd0af094f2feb260bafdf76017d5352c1bba6dc9cfcc4c4caeb3f8b75d85fdb99b49c909caa71753073f401c",
    "signer": "0xcc9cCc523005B394381478381D34DddB8558A28f",
    "userId": "957873025"
  }
}