{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x38de9bafce274a9edc5b0820f0bbe6f58c59e24beaca6ec3e4fecadbd69a0ffe",
    "signature": "0x03bfc353d9946eef8a96ae176ebb512280e7ae8c8b6fdc8f5b0aeb987ccaa3f6189176c1f3eded8188c0a14334db1d667ee2ad09739d0d072f185db0f971f4751c",
    "signer": "0x9A5E16E48e938860681e75D3d0Fa9f61982e52e5",
    "userId": "267890965"
  }
}