{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x17f684a9242cbdf0f1ea7396aa48336d62eb3d6aa4436ccf40c57f7038ecd205",
    "signature": "0xab1a2a80d3542a81c30f9386c4bc9d389e2782f8d74c0ae56af973cab2b53c1f7760c6f59f7c3e8f735734197b8a35624fbf3dc3299a6d5c03a49d9257577e331c",
    "signer": "0xb6B208a8f79b1D88d245afa5aDB0a40d38cd6DD1",
    "userId": "528688046"
  }
}