{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190670",
    "entityType": "User",
    "nonce": "0x9df3e7d8a84d9b66d4e0c0f7485743763171f440ee52f2a602970e42a66a41e3",
    "signature": "0xc5d22b0f41fd9304d8d938ded5d1ce76498cab4e94e6ab37d6b9f322250034fb27503e42cb4b59ac2d0c16f9ccfe777056b630abd97f5f1021e7889d4439e8b61b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}