{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x29ca52d5736f369c6b2251a5ee93e5ed449ea7d90b0aec0611b301085950f056",
    "signature": "0xaa5a5eb979f95bfc2424cd0b2e9762f77313e161a170c24cf5e2ecec3b08a1165617c52cc744bc777b9ef2b89c163a5b615834d48b8180b309a88c06ed8119391b",
    "signer": "0x25d2992E8619B9aC680B3d9Ae74Ed92E504Ec5a0",
    "userId": "125307983"
  }
}