{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "142590",
    "entityType": "User",
    "nonce": "0xb732166475d0f417d9bbdf29c3a2b9073d3125b22f99de2ec10b2134cd2d19ad",
    "signature": "0xa98fedb7714cf4d370d033c02e9173d65b3223f964f5aea9f17df9f04a33363c047badafb3516a4d80dcfb12812c5209c5e05f8b669cacc34918ab9fb4fcb9c61b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}