{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "310796",
    "entityType": "User",
    "nonce": "0xcfe96af08041e9a4733b89132e197ed114adfef8ae75fa1fe0bb16d00a871275",
    "signature": "0xd657154cf4ee2b6ad9cd14bd7423c1fdb08f5c94cc3f16a0a02209ea3358c42c44959cd82b1c04eddad3f8b1cb762d3dc9aed03e933030e5fe51c06ee31d12571c",
    "signer": "0x09Ed944A6653804DF5E864d5240c837F643E2c0F",
    "userId": "214509563"
  }
}