{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257465",
    "entityType": "User",
    "nonce": "0xb4934a3dae99136eb8086f3f47d835903286aa51e8bcfe8b3e51071bd4220ba2",
    "signature": "0x3d83d1c4b58057ffc71502232395a18e3e8e8cc419959b9592b9be1d4d8fbea20a791b160ed85303a09eb8a2863912a5a42de736ba0eef8aa8065dce246c1c011b",
    "signer": "0x2D566E1DaC6fc148a694abe846B32e39B6584aa5",
    "userId": "890889753"
  }
}