{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "833590211",
    "entityType": "User",
    "nonce": "0x7b7213e5b75ab9483e0b249195c782e03a38096a269286bc1ae32eab24798a8c",
    "signature": "0x12d3b9b854caabed5f37f3606e3ada3e240129b16f7466d416ea8028439db4bc5a3b65dc27a645f522b5bfb1241be757010b640feb41203e7ceed78a9a3dac951c",
    "signer": "0x6B239e9B75f27b519de7Bad3a26a0b7d30e32D3f",
    "userId": "311257477"
  }
}