{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "728570067",
    "entityType": "User",
    "nonce": "0x2da5ab2a1e631d9d0f820c3fe6ee43d31a184a610fd5cbdb497cf7ee3d83ef0a",
    "signature": "0x77239c37bcbb0f071636486f9b09e03523fab7811d9693d4ff9996389fc6a42739298bb68e3a0f0f0a1bbf46b099b29dc9f44d15b3277e515108684a98fb3e051b",
    "signer": "0x6b89eeF406A3D10E08768E85967dB17cf7EaCd03",
    "userId": "125044"
  }
}